update to 44.0b1

240 files changed, 1297 insertions, 13638 deletions

diff --git a/arc-firefox-theme/chrome/browser/Push-16.png b/arc-firefox-theme/chrome/browser/Push-16.png
deleted file mode 100644
index 082b177..0000000
--- a/arc-firefox-theme/chrome/browser/Push-16.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/Push-64.png b/arc-firefox-theme/chrome/browser/Push-64.png
deleted file mode 100644
index 6e09ab9..0000000
--- a/arc-firefox-theme/chrome/browser/Push-64.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/aboutCertError.css b/arc-firefox-theme/chrome/browser/aboutCertError.css
index c7caf53..e406eec 100644
--- a/arc-firefox-theme/chrome/browser/aboutCertError.css
+++ b/arc-firefox-theme/chrome/browser/aboutCertError.css
@@ -2,71 +2,97 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+@import url("chrome://global/skin/in-content/common.css");
 
-html {
-  background: -moz-Dialog;
+body {
+  display: flex;
+  box-sizing: border-box;
+  min-height: 100vh;
+  padding: 0 48px;
+  align-items: center;
+  justify-content: center;
 }
 
-body {
-  margin: 0;
-  padding: 0 1em;
-  color: -moz-FieldText;
-  font: message-box;
+#errorPageContainer {
+  position: relative;
+  min-width: 320px;
+  max-width: 512px;
 }
 
-h1 {
-  margin: 0 0 .6em 0;
-  border-bottom: 1px solid ThreeDLightShadow;
-  font-size: 160%;
+#errorTitle {
+  background: url("chrome://browser/skin/cert-error.svg") left 0 no-repeat;
+  background-size: 3em;
+  margin-inline-start: -5em;
+  padding-inline-start: 5em;
 }
 
-h2 {
-  font-size: 130%;
+#errorTitle:-moz-dir(rtl) {
+  background-position: right 0;
 }
 
-#errorPageContainer {
-  position: relative;
-  min-width: 13em;
-  max-width: 52em;
-  margin: 4em auto;
-  border: 1px solid #FFBD09; /* pale yellow extracted from yellow passport icon */
-  border-radius: 10px;
-  padding: 3em;
-  -moz-padding-start: 30px;
-  background: url("chrome://global/skin/icons/sslWarning.png") left 0 no-repeat -moz-Field;
-  background-origin: content-box;
+#errorTitleText {
+  border-bottom: 1px solid #C1C1C1;
+  padding-bottom: 0.4em;
 }
 
-#errorPageContainer:-moz-dir(rtl) {
-  background-position: right 0;
+@media (max-width: 675px) {
+  #errorTitle {
+    padding-top: 0;
+    background-image: none;
+    margin-inline-start: 0;
+    padding-inline-start: 0;
+  }
 }
 
-#errorTitle {
-  -moz-margin-start: 80px;
+#buttonContainer {
+  display: flex;
+  flex-flow: row wrap;
 }
 
-#errorLongContent {
-  -moz-margin-start: 80px;
+#buttonSpacer {
+  flex: 1;
 }
 
-.expander > button {
-  -moz-padding-start: 20px;
-  -moz-margin-start: -20px;
-  background: url("chrome://browser/skin/aboutCertError_sectionExpanded.png") left center no-repeat;
-  border: none;
-  font: inherit;
-  color: inherit;
+/* Pressing the retry button will cause the cursor to flicker from a pointer to
+ * not-allowed. Override the disabled cursor behaviour since we will never show
+ * the button disabled as the initial state. Remove this in Bug 1219861. */
+button:disabled {
   cursor: pointer;
 }
 
-.expander > button:-moz-dir(rtl) {
-  background-position: right center;
+#returnButton {
+  background-color: var(--in-content-primary-button-background);
+  border: none;
+  color: var(--in-content-selected-text);
+  min-width: 250px;
+  margin-inline-start: 0;
+}
+
+#returnButton:hover {
+  background-color: var(--in-content-primary-button-background-hover) !important;
+}
+
+#returnButton:hover:active {
+  background-color: var(--in-content-primary-button-background-active) !important;
+}
+
+#advancedButton {
+  min-width: 150px;
 }
 
-.expander[collapsed] > button {
-  background-image: url("chrome://browser/skin/aboutCertError_sectionCollapsed.png");
+/* Advanced section is hidden via inline styles until the link is clicked */
+#advancedPanel {
+  background-color: white;
+  color: var(--in-content-text-color);
+  border: 1px lightgray solid;
+  /* Don't use top padding because the default p style has top padding, and it
+   * makes the overall div look uneven */
+  padding: 0 12px 10px;
+  margin-top: 10px;
+  box-shadow: 0 0 4px #ddd;
+  font-size: 0.9em;
 }
 
-.expander[collapsed] > button:-moz-dir(rtl) {
-  background-image: url("chrome://browser/skin/aboutCertError_sectionCollapsed-rtl.png");
+.hostname {
+  font-weight: bold;
 }
diff --git a/arc-firefox-theme/chrome/browser/aboutNetError.css b/arc-firefox-theme/chrome/browser/aboutNetError.css
index ff80788..7a4eca3 100644
--- a/arc-firefox-theme/chrome/browser/aboutNetError.css
+++ b/arc-firefox-theme/chrome/browser/aboutNetError.css
@@ -49,7 +49,8 @@ ul {
   background-position: right 0;
 }
 
-#errorTitle[sslv3=true] {
+#errorTitle[sslv3=true],
+#errorTitle[weakCrypto=true] {
   background-image: url("aboutNetError_alert.svg");
 }
 
@@ -78,7 +79,8 @@ button:disabled {
   cursor: pointer;
 }
 
-div#certificateErrorReporting {
+div#certificateErrorReporting,
+div#weakCryptoAdvanced {
   display: none;
   float: right;
   /* Align with the "Try Again" button */
@@ -86,11 +88,13 @@ div#certificateErrorReporting {
   -moz-margin-end: 24px;
 }
 
-div#certificateErrorReporting a {
+div#certificateErrorReporting a,
+div#weakCryptoAdvanced a {
   text-decoration: none;
 }
 
-div#certificateErrorReporting a:hover {
+div#certificateErrorReporting a:hover,
+div#weakCryptoAdvanced a:hover {
   text-decoration: underline;
 }
 
@@ -102,7 +106,8 @@ span.downArrow {
   transform: scaleY(0.7);
 }
 
-div#certificateErrorReportingPanel {
+div#certificateErrorReportingPanel,
+div#weakCryptoAdvancedPanel {
   /* Hidden until the link is clicked */
   display: none;
   background-color: white;
@@ -117,15 +122,18 @@ div#certificateErrorReportingPanel {
   margin-top: 10px;
 }
 
-div#certificateErrorReportingPanel:-moz-dir(ltr) {
+div#certificateErrorReportingPanel:-moz-dir(ltr),
+div#weakCryptoAdvancedPanel:-moz-dir(ltr) {
   left: 34%;
 }
 
-div#certificateErrorReportingPanel:-moz-dir(rtl) {
+div#certificateErrorReportingPanel:-moz-dir(rtl),
+div#weakCryptoAdvancedPanel:-moz-dir(rtl) {
   right: 0;
 }
 
-#errorStatePanel {
+#errorStatePanel,
+#overrideWeakCryptoPanel {
   display: flex;
   flex-direction: row;
   flex-wrap: wrap;
diff --git a/arc-firefox-theme/chrome/browser/aboutTabCrashed.css b/arc-firefox-theme/chrome/browser/aboutTabCrashed.css
index 2ef767e..e42922a 100644
--- a/arc-firefox-theme/chrome/browser/aboutTabCrashed.css
+++ b/arc-firefox-theme/chrome/browser/aboutTabCrashed.css
@@ -9,3 +9,34 @@
 #reportSent {
   font-weight: bold;
 }
+
+#crash-reporter-container {
+  width: 80%;
+  background-color: var(--in-content-box-background-hover);
+  margin: 24px 0;
+  padding: 14px;
+  border: 1px solid var(--in-content-box-border-color);
+  border-radius: 2px;
+}
+
+#crash-reporter-title {
+  font-weight: bold;
+  margin: 0 0 14px 0;
+}
+
+input[type="text"],
+textarea {
+  width: 100%;
+  box-sizing: border-box;
+  resize: none;
+}
+
+#options {
+  list-style: none;
+  margin-inline-start: 0;
+}
+
+input[type="text"],
+#options > li {
+  margin: 14px 0 0 0;
+}
diff --git a/arc-firefox-theme/chrome/browser/badge-add-engine@2x.png b/arc-firefox-theme/chrome/browser/badge-add-engine@2x.png
new file mode 100644
index 0000000..abf084a
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/badge-add-engine@2x.png
diff --git a/arc-firefox-theme/chrome/browser/browser-lightweightTheme.css b/arc-firefox-theme/chrome/browser/browser-lightweightTheme.css
index 8bc1b45..53f07ec 100644
--- a/arc-firefox-theme/chrome/browser/browser-lightweightTheme.css
+++ b/arc-firefox-theme/chrome/browser/browser-lightweightTheme.css
@@ -18,7 +18,7 @@
 #tabbrowser-tabs:not([movingtab]) > .tabbrowser-tab > .tab-stack > .tab-background > .tab-background-end[visuallyselected=true]:-moz-lwtheme::before {
   background-attachment: scroll, fixed;
   background-color: transparent;
-  background-image: linear-gradient(transparent 0px, transparent 2px, hsla(0,0%,100%,0.35) 2px, hsla(0,0%,100%,0.35) 3px, hsla(0,0%,100%,0.65) 3px, hsla(0,0%,100%,0.65) 4px, rgba(255,255,255,.3));/*, lwtHeader;*/
+  background-image: linear-gradient(transparent 2px, rgba(255,255,255,.4) 2px, rgba(255,255,255,.4));/*, lwtHeader;*/
   background-position: 0 0, right top;
   background-repeat: repeat-x, no-repeat;
 }
@@ -27,7 +27,7 @@
   background-attachment: scroll, scroll, fixed;
   background-color: transparent;
   background-image: url(chrome://browser/skin/tabbrowser/tab-active-middle.png),
-                    linear-gradient(transparent 0px, transparent 2px, hsla(0,0%,100%,0.35) 2px, hsla(0,0%,100%,0.35) 3px, hsla(0,0%,100%,0.65) 3px, hsla(0,0%,100%,0.65) 4px, rgba(255,255,255,.3));/*,
+                    linear-gradient(transparent 2px, rgba(255,255,255,.4) 2px, rgba(255,255,255,.4));/*,
                     lwtHeader;*/
   background-position: 0 0, 0 0, right top;
   background-repeat: repeat-x, repeat-x, no-repeat;
diff --git a/arc-firefox-theme/chrome/browser/browser.css b/arc-firefox-theme/chrome/browser/browser.css
index 3752502..7229492 100644
--- a/arc-firefox-theme/chrome/browser/browser.css
+++ b/arc-firefox-theme/chrome/browser/browser.css
@@ -482,6 +482,15 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
   list-style-image: url("chrome://global/skin/console/console.png"); }
 
 /* Primary toolbar buttons */
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon {
+  max-width: 16px; }
+
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon,
+#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  max-width: 18px; }
+
 .findbar-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 {
@@ -508,14 +517,11 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button)) > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
   padding: 3px 7px; }
 
-/* Help SDK icons fit: */
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
-  width: 16px; }
-
-:-moz-any(#TabsToolbar, #nav-bar) toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon {
-  /* XXXgijs box models strike again: this is 16px + 2 * 7px padding + 2 * 1px border (from the rules above) */
-  width: 32px; }
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  /* horizontal padding + border + actual icon width */
+  max-width: 32px !important; }
 
 #nav-bar #PanelUI-menu-button {
   -moz-padding-start: 5px;
@@ -580,18 +586,30 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:hover:active {
   padding: 3px; }
 
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons {
+  margin-left: 2px;
+  margin-right: 2px; }
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons > .toolbarbutton-1 {
+  padding-left: 0;
+  padding-right: 0; }
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons:not(:hover) > separator,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
   content: "";
   display: -moz-box;
   width: 1px;
   height: 18px;
   -moz-margin-end: -1px;
-  background-image: var(--toolbarbutton-combined-backgroundimage);
-  background-clip: padding-box;
+  background-image: linear-gradient(currentColor 0, currentColor 100%);
   background-position: center;
   background-repeat: no-repeat;
   background-size: 1px 18px;
-  box-shadow: var(--toolbarbutton-combined-boxshadow); }
+  opacity: .2; }
+
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbaritem-combined-buttons > separator,
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
+  opacity: .3; }
 
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
   -moz-margin-start: -4px; }
@@ -1284,7 +1302,6 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   #minimize-button:active {
     list-style-image: url("chrome://browser/skin/custom_images/light/window-controls/minimize_pressed.svg"); }
 
-/* Location bar */
 #urlbar,
 .searchbar-textbox {
   -moz-appearance: none;
@@ -1304,6 +1321,15 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
 .searchbar-textbox {
   border-radius: 20px; }
 
+#urlbar:-moz-lwtheme,
+.searchbar-textbox:-moz-lwtheme {
+  background-color: rgba(255, 255, 255, 0.8);
+  color: black; }
+
+#urlbar:-moz-lwtheme[focused=true],
+.searchbar-textbox:-moz-lwtheme[focused=true] {
+  background-color: white; }
+
 .urlbar-textbox-container {
   -moz-appearance: none;
   -moz-box-align: center; }
@@ -1315,7 +1341,7 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   -moz-appearance: toolbarbutton-dropdown;
   transition: opacity 0.15s ease; }
 
-#urlbar:not(:hover) > .urlbar-textbox-container > .urlbar-history-dropmarker {
+#navigator-toolbox:not(:hover) .urlbar-history-dropmarker {
   opacity: 0; }
 
 #urlbar-container {
@@ -1489,6 +1515,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 .verifiedIdentity > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-secure.svg); }
 
+.insecureLoginForms > #identity-icons > #page-proxy-favicon[pageproxystate="valid"],
 .mixedActiveContent > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-mixed-active-loaded.svg); }
 
@@ -1518,9 +1545,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 .popup-notification-icon[popupid="geolocation"] {
   list-style-image: url(chrome://browser/skin/Geolocation-64.png); }
 
-.popup-notification-icon[popupid="push"] {
-  list-style-image: url(chrome://browser/skin/Push-64.png); }
-
 .popup-notification-icon[popupid="xpinstall-disabled"],
 .popup-notification-icon[popupid="addon-install-blocked"],
 .popup-notification-icon[popupid="addon-install-origin-blocked"] {
@@ -1548,7 +1572,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
   list-style-image: url(chrome://mozapps/skin/plugins/pluginBlocked-64.png); }
 
 .popup-notification-icon[popupid="web-notifications"] {
-  list-style-image: url(chrome://browser/skin/notification-64.png); }
+  list-style-image: url(chrome://browser/skin/web-notifications-icon.svg); }
 
 .popup-notification-icon[popupid="indexedDB-permissions-prompt"],
 .popup-notification-icon[popupid*="offline-app-requested"],
@@ -1613,9 +1637,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 #geo-notification-icon {
   list-style-image: url(chrome://browser/skin/Geolocation-16.png); }
 
-#push-notification-icon {
-  list-style-image: url(chrome://browser/skin/Push-16.png); }
-
 #addons-notification-icon {
   list-style-image: url(chrome://browser/skin/addons/addon-install-anchor.svg#default); }
 
@@ -1699,7 +1720,16 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 
 .web-notifications-notification-icon,
 #web-notifications-notification-icon {
-  list-style-image: url(chrome://browser/skin/notification-16.png); }
+  list-style-image: url(chrome://browser/skin/web-notifications-tray.svg);
+  -moz-image-region: rect(0, 16px, 16px, 0); }
+
+.web-notifications-notification-icon:hover,
+#web-notifications-notification-icon:hover {
+  -moz-image-region: rect(0, 32px, 16px, 16px); }
+
+.web-notifications-notification-icon:hover:active,
+#web-notifications-notification-icon:hover:active {
+  -moz-image-region: rect(0, 48px, 16px, 32px); }
 
 .pointerLock-notification-icon,
 #pointerLock-notification-icon {
@@ -2571,6 +2601,29 @@ lwtHeader;*/
   background-repeat: no-repeat;
   background-size: 30px 100%, calc(100% - (2 * 30px)) 100%, 30px 100%; }
 
+/* User Context UI - change tab decoration depending on userContextId.
+   Defaults to gray for unknown usercontextids. */
+.tabbrowser-tab[usercontextid] {
+  background-image: linear-gradient(to right, transparent 20%, #909090 30%, #909090 70%, transparent 80%);
+  background-size: auto 2px;
+  background-repeat: no-repeat; }
+
+/* Personal User Context */
+.tabbrowser-tab[usercontextid="1"] {
+  background-image: linear-gradient(to right, transparent 20%, #00a7e0 30%, #00a7e0 70%, transparent 80%); }
+
+/* Work User Context */
+.tabbrowser-tab[usercontextid="2"] {
+  background-image: linear-gradient(to right, transparent 20%, #f89c24 30%, #f89c24 70%, transparent 80%); }
+
+/* Banking User Context */
+.tabbrowser-tab[usercontextid="3"] {
+  background-image: linear-gradient(to right, transparent 20%, #7dc14c 30%, #7dc14c 70%, transparent 80%); }
+
+/* Shopping User Context */
+.tabbrowser-tab[usercontextid="4"] {
+  background-image: linear-gradient(to right, transparent 20%, #ee5195 30%, #ee5195 70%, transparent 80%); }
+
 /* Tab pointer-events */
 .tabbrowser-tab {
   pointer-events: none; }
@@ -2589,12 +2642,20 @@ lwtHeader;*/
   height: 100%;
   position: absolute; }
 
-.tabbrowser-tab[pinned][titlechanged]:not([visuallyselected="true"]) > .tab-stack > .tab-content {
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([visuallyselected="true"]),
+.tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([visuallyselected="true"]) {
   background-image: radial-gradient(farthest-corner at center bottom, white 3%, rgba(186, 221, 251, 0.75) 20%, rgba(127, 179, 255, 0.25) 40%, transparent 70%);
   background-position: center bottom var(--tab-toolbar-navbar-overlap);
   background-repeat: no-repeat;
   background-size: 85% 100%; }
 
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([pinned]):not([visuallyselected="true"]) {
+  background-position: left bottom var(--tab-toolbar-navbar-overlap);
+  background-size: 34px 100%; }
+
+.tab-label[attention]:not([visuallyselected="true"]) {
+  font-weight: bold; }
+
 /* Tab separators */
 /* Also show separators beside the selected tab when dragging it. */
 /* New tab button */
@@ -2729,6 +2790,12 @@ lwtHeader;*/
 .alltabs-endimage[soundplaying] {
   list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio); }
 
+menuitem:hover > hbox > .alltabs-endimage[muted] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-muted-hover); }
+
+menuitem:hover > hbox > .alltabs-endimage[soundplaying] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-hover); }
+
 /* Sidebar */
 #sidebar-throbber[loading="true"] {
   list-style-image: url("chrome://global/skin/icons/loading_16.png");
@@ -2798,7 +2865,7 @@ toolbarbutton.chevron > .toolbarbutton-icon {
   margin-bottom: 5px; }
 
 #sync-start-panel-subtitle {
-  margin: 0; }
+  margin-bottom: 0; }
 
 /* Status panel */
 .statuspanel-label {
@@ -2951,7 +3018,7 @@ html|*#fullscreen-exit-button {
   -moz-appearance: none;
   display: -moz-box;
   background-color: transparent;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   border-width: 0;
   min-width: 16px; }
@@ -2973,7 +3040,7 @@ html|*#fullscreen-exit-button {
 .devtools-responsiveui-toolbarbutton[type=menu] > .toolbarbutton-menu-dropmarker,
 .devtools-responsiveui-toolbarbutton[type=menu-button] > .toolbarbutton-menubutton-dropmarker {
   -moz-appearance: none !important;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   padding: 0 3px; }
 
@@ -2982,19 +3049,19 @@ html|*#fullscreen-exit-button {
   margin-left: 0; }
 
 .devtools-responsiveui-close {
-  list-style-image: url("chrome://browser/skin/devtools/close.png"); }
+  list-style-image: url("chrome://devtools/skin/images/close.png"); }
 
 .devtools-responsiveui-rotate {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate.png"); }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-close {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png"); }
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png"); }
 
   .devtools-responsiveui-rotate {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate@2x.png"); } }
 .devtools-responsiveui-touch {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch.png");
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px); }
 
 .devtools-responsiveui-touch[checked] {
@@ -3002,24 +3069,24 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-touch {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px); }
 
   .devtools-responsiveui-touch[checked] {
     -moz-image-region: rect(0px, 64px, 32px, 32px); } }
 .devtools-responsiveui-screenshot {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot.png"); }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-screenshot {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot@2x.png"); } }
 .devtools-responsiveui-resizebarV {
   width: 7px;
   height: 24px;
   cursor: ew-resize;
   transform: translate(12px, -12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer.png"); }
 
 .devtools-responsiveui-resizebarH {
   width: 24px;
@@ -3027,7 +3094,7 @@ html|*#fullscreen-exit-button {
   cursor: ns-resize;
   transform: translate(-12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer.png"); }
 
 .devtools-responsiveui-resizehandle {
   width: 16px;
@@ -3035,7 +3102,7 @@ html|*#fullscreen-exit-button {
   cursor: se-resize;
   transform: translate(12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-se-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer.png"); }
 
 /* FxOS custom mode with additional buttons and phone look'n feel */
 /* Hide devtools manual resizer */
@@ -3071,7 +3138,7 @@ html|*#fullscreen-exit-button {
   -moz-user-focus: ignore;
   width: 40px;
   height: 30px;
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-home.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-home.png"); }
 
 .devtools-responsiveui-sleep-button {
   -moz-user-focus: ignore;
@@ -3117,13 +3184,13 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-resizebarV {
-    background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer@2x.png"); }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer@2x.png"); }
 
   .devtools-responsiveui-resizebarH {
-    background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer@2x.png"); }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer@2x.png"); }
 
   .devtools-responsiveui-resizehandle {
-    background-image: url("chrome://browser/skin/devtools/responsive-se-resizer@2x.png"); } }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer@2x.png"); } }
 /* Developer toolbar */
 /* NOTE: THESE NEED TO STAY IN SYNC WITH LIGHT-THEME.CSS AND DARK-THEME.CSS.
    We are copy/pasting variables from light-theme and dark-theme,
@@ -3180,7 +3247,7 @@ html|*#fullscreen-exit-button {
 
 :root[devtoolstheme="light"] #developer-toolbar > toolbarbutton:not([checked=true]) > image,
 :root[devtoolstheme="light"] .gclitoolbar-input-node:not([focused=true])::before {
-  filter: url("chrome://browser/skin/devtools/filters.svg#invert"); }
+  filter: url("chrome://devtools/skin/images/filters.svg#invert"); }
 
 .developer-toolbar-button > .toolbarbutton-icon,
 #developer-toolbar-closebutton > .toolbarbutton-icon {
@@ -3188,7 +3255,7 @@ html|*#fullscreen-exit-button {
   height: 16px; }
 
 #developer-toolbar-toolbox-button {
-  list-style-image: url("chrome://browser/skin/devtools/toggle-tools.png");
+  list-style-image: url("chrome://devtools/skin/images/toggle-tools.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px); }
 
 #developer-toolbar-toolbox-button > label {
@@ -3205,7 +3272,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-toolbox-button {
-    list-style-image: url("chrome://browser/skin/devtools/toggle-tools@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/toggle-tools@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px); }
 
   #developer-toolbar-toolbox-button:hover {
@@ -3217,7 +3284,7 @@ html|*#fullscreen-exit-button {
   #developer-toolbar-toolbox-button[checked=true] {
     -moz-image-region: rect(0px, 128px, 32px, 96px); } }
 #developer-toolbar-closebutton {
-  list-style-image: url("chrome://browser/skin/devtools/close.png");
+  list-style-image: url("chrome://devtools/skin/images/close.png");
   -moz-appearance: none;
   border: none;
   margin: 0 4px;
@@ -3227,7 +3294,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-closebutton {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png"); } }
 #developer-toolbar-closebutton > .toolbarbutton-icon {
   /* XXX Buttons have padding in widget/ that we don't want here but can't override with good CSS, so we must
      use evil CSS to give the impression of smaller content */
@@ -3289,7 +3356,7 @@ html|*#gcli-output-frame {
   width: 16px;
   height: 16px;
   margin: 0 2px;
-  background-image: url("chrome://browser/skin/devtools/commandline-icon.png");
+  background-image: url("chrome://devtools/skin/images/commandline-icon.png");
   background-position: 0 center;
   background-size: 32px 16px; }
 
@@ -3298,7 +3365,7 @@ html|*#gcli-output-frame {
 
 @media (min-resolution: 1.1dppx) {
   .gclitoolbar-input-node::before {
-    background-image: url("chrome://browser/skin/devtools/commandline-icon@2x.png"); } }
+    background-image: url("chrome://devtools/skin/images/commandline-icon@2x.png"); } }
 .gclitoolbar-input-node > .textbox-input-box > html|*.textbox-input::-moz-selection {
   background-color: var(--selection-background);
   color: var(--selection-color);
@@ -3734,6 +3801,12 @@ toolbar[brighttext] #downloads-indicator-counter {
 chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   transform: none; }
 
+chatbox[src^="about:loopconversation#"] .chat-minimize-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#minimize-white"); }
+
+chatbox[src^="about:loopconversation#"] .chat-swap-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#expand-white"); }
+
 .chat-loop-hangup {
   list-style-image: url("chrome://browser/skin/social/chat-icons.svg#exit-white");
   background-color: #d13f1a;
@@ -3755,6 +3828,9 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   text-shadow: none;
   cursor: inherit; }
 
+chatbox[src^="about:loopconversation#"] .chat-title {
+  color: white; }
+
 .chat-titlebar {
   height: 26px;
   min-height: 26px;
@@ -3771,6 +3847,10 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
 .chat-titlebar[selected] {
   background-color: #f0f0f0; }
 
+chatbox[src^="about:loopconversation#"] > .chat-titlebar {
+  background-color: #00a9dc;
+  border-color: #00a9dc; }
+
 .chat-titlebar > .notification-anchor-icon {
   margin-left: 2px;
   margin-right: 2px; }
@@ -4627,5 +4707,62 @@ notification.heartbeat {
   -moz-padding-end: 0 !important;
   -moz-margin-end: 0 !important; }
 
-.browser-action-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0; }
+.browser-extension-panel > .panel-arrowcontainer > .panel-arrowcontent {
+  padding: 0;
+  overflow: hidden; }
+
+/* User Context UI browser styles */
+#menu_newUserContextTabPersonal {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg"); }
+
+#menu_newUserContextTabWork {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg"); }
+
+#menu_newUserContextTabBanking {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg"); }
+
+#menu_newUserContextTabShopping {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg"); }
+
+/* URL Bar Decoration */
+#userContext-indicator {
+  height: 16px;
+  width: 16px; }
+
+#userContext-label {
+  margin-inline-end: 3px;
+  color: #909090; }
+
+#userContext-icons:not([usercontextid]) {
+  display: none; }
+
+#userContext-icons {
+  -moz-box-align: center; }
+
+/* Personal User Context */
+#userContext-icons[usercontextid="1"] > #userContext-label {
+  color: #00a7e0; }
+
+#userContext-icons[usercontextid="1"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg"); }
+
+/* Work User Context */
+#userContext-icons[usercontextid="2"] > #userContext-label {
+  color: #f89c24; }
+
+#userContext-icons[usercontextid="2"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg"); }
+
+/* Banking User Context */
+#userContext-icons[usercontextid="3"] > #userContext-label {
+  color: #7dc14c; }
+
+#userContext-icons[usercontextid="3"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg"); }
+
+/* Shopping User Context */
+#userContext-icons[usercontextid="4"] > #userContext-label {
+  color: #ee5195; }
+
+#userContext-icons[usercontextid="4"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg"); }
diff --git a/arc-firefox-theme/chrome/browser/cert-error.svg b/arc-firefox-theme/chrome/browser/cert-error.svg
new file mode 100644
index 0000000..4bf5077
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/cert-error.svg
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+
+<svg version="1.1"
+     xmlns="http://www.w3.org/2000/svg"
+     xmlns:xlink="http://www.w3.org/1999/xlink"
+     width="45"
+     height="45"
+     viewBox="0 0 45 45">
+
+  <style>
+    .icon-default {
+      fill: #999;
+    }
+  </style>
+
+  <defs>
+    <rect id="shape-lock-clasp-outer" x="8" y="2" width="28" height="40" rx="14" ry="14" />
+    <rect id="shape-lock-clasp-inner" x="14" y="8" width="16" height="28" rx="8" ry="8" />
+    <rect id="shape-lock-base" x="4" y="18" width="36" height="24" rx="3" ry="3" />
+
+    <mask id="mask-clasp-cutout">
+      <rect width="48" height="48" fill="#000" />
+      <use xlink:href="#shape-lock-clasp-outer" fill="#fff" />
+      <use xlink:href="#shape-lock-clasp-inner" fill="#000" />
+      <line x1="4" y1="38" x2="41" y2="3" stroke="#000" stroke-width="5.5" />
+      <line x1="4" y1="46" x2="41" y2="11" stroke="#000" stroke-width="5.5" />
+      <rect x="4" y="18" width="36" height="26" rx="6" ry="6" />
+    </mask>
+
+    <mask id="mask-base-cutout">
+      <rect width="45" height="45" fill="#000" />
+      <use xlink:href="#shape-lock-base" fill="#fff" />
+      <line x1="2.5" y1="41.5" x2="41" y2="5" stroke="#000" stroke-width="8.5" />
+    </mask>
+  </defs>
+
+  <use xlink:href="#shape-lock-clasp-outer" mask="url(#mask-clasp-cutout)" fill="#999" />
+  <use xlink:href="#shape-lock-base" mask="url(#mask-base-cutout)" fill="#999" />
+
+  <line x1="2.5" y1="41.5" x2="41" y2="5" stroke="#d92d21" stroke-width="5.5" />
+
+</svg>
diff --git a/arc-firefox-theme/chrome/browser/controlcenter/panel.css b/arc-firefox-theme/chrome/browser/controlcenter/panel.css
index e3a4d14..824c652 100644
--- a/arc-firefox-theme/chrome/browser/controlcenter/panel.css
+++ b/arc-firefox-theme/chrome/browser/controlcenter/panel.css
@@ -4,7 +4,7 @@
 
 
 /* Hide all conditional elements by default. */
-:-moz-any([when-connection],[when-mixedcontent],[when-ciphers]) {
+:-moz-any([when-connection],[when-mixedcontent],[when-ciphers],[when-loginforms]) {
   display: none;
 }
 
@@ -14,6 +14,8 @@
 #identity-popup[connection=secure] [when-connection~=secure],
 #identity-popup[connection=chrome] [when-connection~=chrome],
 #identity-popup[connection=file] [when-connection~=file],
+/* Show insecure login forms messages when needed. */
+#identity-popup[loginforms=insecure] [when-loginforms=insecure],
 /* Show weak cipher messages when needed. */
 #identity-popup[ciphers=weak] [when-ciphers~=weak],
 /* Show mixed content warnings when needed */
@@ -27,6 +29,14 @@
   display: inherit;
 }
 
+/* Hide redundant messages based on insecure login forms presence. */
+#identity-popup[loginforms=secure] [and-when-loginforms=insecure] {
+  display: none;
+}
+#identity-popup[loginforms=insecure] [and-when-loginforms=secure] {
+  display: none;
+}
+
 /* Hide 'not secure' message in subview when weak cipher or mixed content messages are shown. */
 #identity-popup-securityView-body:-moz-any([mixedcontent],[ciphers]) > description[when-connection=not-secure],
 /* Hide 'passive-loaded (only)' message when there is mixed passive content loaded and active blocked. */
@@ -223,6 +233,8 @@
   background-image: url(chrome://browser/skin/controlcenter/conn-degraded.svg);
 }
 
+#identity-popup[loginforms=insecure] #identity-popup-securityView,
+#identity-popup[loginforms=insecure] #identity-popup-security-content,
 #identity-popup[mixedcontent~=active-loaded][isbroken] #identity-popup-securityView,
 #identity-popup[mixedcontent~=active-loaded][isbroken] #identity-popup-security-content {
   background-image: url(chrome://browser/skin/controlcenter/mcb-disabled.svg);
diff --git a/arc-firefox-theme/chrome/browser/customizableui/customize-illustration-rtl@2x.png b/arc-firefox-theme/chrome/browser/customizableui/customize-illustration-rtl@2x.png
new file mode 100644
index 0000000..c1af129
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/customizableui/customize-illustration-rtl@2x.png
diff --git a/arc-firefox-theme/chrome/browser/customizableui/customize-illustration@2x.png b/arc-firefox-theme/chrome/browser/customizableui/customize-illustration@2x.png
new file mode 100644
index 0000000..50c0d19
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/customizableui/customize-illustration@2x.png
diff --git a/arc-firefox-theme/chrome/browser/customizableui/info-icon-customizeTip@2x.png b/arc-firefox-theme/chrome/browser/customizableui/info-icon-customizeTip@2x.png
new file mode 100644
index 0000000..7a87fac
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/customizableui/info-icon-customizeTip@2x.png
diff --git a/arc-firefox-theme/chrome/browser/customizableui/panelUIOverlay.css b/arc-firefox-theme/chrome/browser/customizableui/panelUIOverlay.css
index 367bf27..4095e76 100644
--- a/arc-firefox-theme/chrome/browser/customizableui/panelUIOverlay.css
+++ b/arc-firefox-theme/chrome/browser/customizableui/panelUIOverlay.css
@@ -22,7 +22,8 @@
 
 #PanelUI-popup #PanelUI-contents:empty::before {
   content: "";
-  background-image: url(chrome://browser/skin/customizableui/whimsy-bw.png);
+  background-image: url(chrome://browser/skin/customizableui/whimsy.png);
+  background-size: 64px 64px;
   display: block;
   width: 64px;
   height: 64px;
@@ -32,6 +33,10 @@
              whimsyMoveY 3.4s linear 0s infinite alternate;
 }
 
+#PanelUI-popup #PanelUI-contents:not(:hover):empty::before {
+  filter: grayscale(100%);
+}
+
 #PanelUI-popup #PanelUI-contents:active:empty::before {
   animation: whimsyMoveX 3.05s linear 0s infinite alternate,
              whimsyMoveY 3.4s linear 0s infinite alternate,
@@ -49,16 +54,8 @@
              whimsyRotate 1s linear 0s infinite normal;
 }
 
-#PanelUI-popup #PanelUI-contents:empty:hover::before {
-  background-image: url(chrome://browser/skin/customizableui/whimsy.png);
-}
-
 @media (min-resolution: 2dppx) {
   #PanelUI-popup #PanelUI-contents:empty::before {
-    background-image: url(chrome://browser/skin/customizableui/whimsy-bw@2x.png);
-    background-size: 64px 64px;
-  }
-  #PanelUI-popup #PanelUI-contents:empty:hover::before {
     background-image: url(chrome://browser/skin/customizableui/whimsy@2x.png);
   }
 }
diff --git a/arc-firefox-theme/chrome/browser/customizableui/panelarrow-customizeTip@2x.png b/arc-firefox-theme/chrome/browser/customizableui/panelarrow-customizeTip@2x.png
new file mode 100644
index 0000000..cfd7ba9
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/customizableui/panelarrow-customizeTip@2x.png
diff --git a/arc-firefox-theme/chrome/browser/customizableui/subView-arrow-back-inverted-rtl@2x.png b/arc-firefox-theme/chrome/browser/customizableui/subView-arrow-back-inverted-rtl@2x.png
new file mode 100644
index 0000000..bb25040
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/customizableui/subView-arrow-back-inverted-rtl@2x.png
diff --git a/arc-firefox-theme/chrome/browser/customizableui/subView-arrow-back-inverted@2x.png b/arc-firefox-theme/chrome/browser/customizableui/subView-arrow-back-inverted@2x.png
new file mode 100644
index 0000000..1c8e86d
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/customizableui/subView-arrow-back-inverted@2x.png
diff --git a/arc-firefox-theme/chrome/browser/customizableui/whimsy-bw.png b/arc-firefox-theme/chrome/browser/customizableui/whimsy-bw.png
deleted file mode 100644
index 481d3fc..0000000
--- a/arc-firefox-theme/chrome/browser/customizableui/whimsy-bw.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/customizableui/whimsy-bw@2x.png b/arc-firefox-theme/chrome/browser/customizableui/whimsy-bw@2x.png
deleted file mode 100644
index 09516ab..0000000
--- a/arc-firefox-theme/chrome/browser/customizableui/whimsy-bw@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devedition.css b/arc-firefox-theme/chrome/browser/devedition.css
index eb2234b..860c12a 100644
--- a/arc-firefox-theme/chrome/browser/devedition.css
+++ b/arc-firefox-theme/chrome/browser/devedition.css
@@ -162,13 +162,10 @@
 .browserContainer > findbar,
 #browser-bottombox {
   background-color: var(--chrome-secondary-background-color) !important;
+  background-image: none !important;
   color: var(--chrome-color);
 }
 
-.browserContainer > findbar {
-  background-image: none;
-}
-
 .browserContainer > .findbar-textbox {
   background-color: var(--url-and-searchbar-background-color) !important;
   color: var(--url-and-searchbar-color);
@@ -243,7 +240,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper {
   border-bottom: none !important;
   border-radius: 0 !important;
   box-shadow: 0 -1px var(--chrome-nav-bar-separator-color) !important;
-  background-image: none !important;
 }
 
 /* No extra vertical padding for nav bar */
@@ -281,12 +277,18 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper {
   pointer-events: auto;
 }
 
-.tabbrowser-tab[pinned][titlechanged]:not([visuallyselected="true"]) > .tab-stack > .tab-content {
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([visuallyselected="true"]),
+.tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([visuallyselected="true"]) {
   background-image: var(--pinned-tab-glow);
   background-position: center;
   background-size: 100%;
 }
 
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([pinned]):not([visuallyselected="true"]) {
+  background-position: left bottom var(--tab-toolbar-navbar-overlap);
+  background-size: 34px 100%;
+}
+
 .tabbrowser-arrowscrollbox > .scrollbutton-down:not([disabled]):hover,
 .tabbrowser-arrowscrollbox > .scrollbutton-up:not([disabled]):hover,
 .tabbrowser-tab:hover {
diff --git a/arc-firefox-theme/chrome/browser/devtools/add.svg b/arc-firefox-theme/chrome/browser/devtools/add.svg
deleted file mode 100644
index b8b93de..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/add.svg
+++ /dev/null
@@ -1,9 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg width="16" height="16" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-  <g fill="#babec3">
-    <rect x="3" y="7" width="10" height="2" />
-    <rect x="7" y="3" width="2" height="10" />
-  </g>
-</svg>
\ No newline at end of file
diff --git a/arc-firefox-theme/chrome/browser/devtools/alerticon-warning.png b/arc-firefox-theme/chrome/browser/devtools/alerticon-warning.png
deleted file mode 100644
index 5c5d0ae..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/alerticon-warning.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/alerticon-warning@2x.png b/arc-firefox-theme/chrome/browser/devtools/alerticon-warning@2x.png
deleted file mode 100644
index dc3a3b1..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/alerticon-warning@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/animation-fast-track.svg b/arc-firefox-theme/chrome/browser/devtools/animation-fast-track.svg
deleted file mode 100644
index ee84427..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/animation-fast-track.svg
+++ /dev/null
@@ -1,9 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<svg xmlns="http://www.w3.org/2000/svg" width="9" height="12">
-  <g transform="matrix(1.0251088,0,0,0.85613344,-3.1546734,-888.94343)">
-    <path d="m 5.1284819,1038.3667 6.4950901,0 -2.7147491,4.6651 2.9438561,0 -8.1148915,9.3081 1.6126718,-6.8973 -2.2701022,0 z" style="fill:#4cb0e1;"/>
-  </g>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/animationinspector.css b/arc-firefox-theme/chrome/browser/devtools/animationinspector.css
deleted file mode 100644
index dfd1b3d..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/animationinspector.css
+++ /dev/null
@@ -1,508 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* Animation-inspector specific theme variables */
-
-.theme-dark {
-  --even-animation-timeline-background-color: rgba(255,255,255,0.03);
-}
-
-.theme-light {
-  --even-animation-timeline-background-color: rgba(128,128,128,0.03);
-}
-
-:root {
-  /* How high should toolbars be */
-  --toolbar-height: 20px;
-  /* How wide should the sidebar be */
-  --timeline-sidebar-width: 150px;
-  /* How high should animations displayed in the timeline be */
-  --timeline-animation-height: 20px;
-}
-
-html {
-  height: 100%;
-}
-
-body {
-  margin: 0;
-  padding: 0;
-  display : flex;
-  flex-direction: column;
-  height: 100%;
-  overflow: hidden;
-  color: var(--theme-content-color3);
-}
-
-/* The top toolbar, containing the toggle-all button. And the timeline toolbar,
-   containing playback control buttons, shown only when there are animations
-   displayed in the timeline */
-
-#global-toolbar,
-#timeline-toolbar {
-  border-bottom: 1px solid var(--theme-splitter-color);
-  display: flex;
-  flex-direction: row;
-  align-items: center;
-  justify-content: flex-end;
-  height: var(--toolbar-height);
-}
-
-#timeline-toolbar {
-  display: none;
-}
-
-[timeline] #global-toolbar {
-  display: none;
-}
-
-[timeline] #timeline-toolbar {
-  display: flex;
-}
-
-#global-toolbar .label {
-  padding: 1px 4px;
-}
-
-/* The main animations container */
-
-#players {
-  height: calc(100% - var(--toolbar-height));
-  overflow: auto;
-}
-
-[empty] #players {
-  display: none;
-}
-
-/* The error message, shown when an invalid/unanimated element is selected */
-
-#error-message {
-  padding-top: 10%;
-  text-align: center;
-  flex: 1;
-  overflow: auto;
-
-  /* The error message is hidden by default */
-  display: none;
-}
-
-[empty] #error-message {
-  display: block;
-}
-
-/* Element picker, toggle-all buttons, timeline pause button, ... */
-
-#global-toolbar .devtools-button,
-#timeline-toolbar .devtools-button {
-  border-width: 0 0 0 1px;
-  min-height: var(--toolbar-height);
-}
-
-.devtools-button {
-  position: relative;
-}
-
-.devtools-button::before {
-  content: "";
-  display: block;
-  width: 16px;
-  height: 16px;
-  position: absolute;
-  left: 50%;
-  top: 50%;
-  margin: -8px 0 0 -8px;
-}
-
-#element-picker::before {
-  background-image: url("chrome://browser/skin/devtools/command-pick.png");
-}
-
-.pause-button::before {
-  background-image: url("debugger-pause.png");
-}
-
-#element-picker[checked]::before {
-  background-position: -48px 0;
-  filter: none; /* Icon is blue when checked, don't invert for light theme */
-}
-
-.pause-button.paused::before {
-  background-image: url("debugger-play.png");
-}
-
-@media (min-resolution: 1.1dppx) {
-  #element-picker::before {
-    background-image: url("chrome://browser/skin/devtools/command-pick@2x.png");
-    background-size: 64px;
-  }
-
-  .pause-button::before {
-    background-image: url("debugger-pause@2x.png");
-  }
-
-  .pause-button.paused::before {
-    background-image: url("debugger-play@2x.png");
-  }
-}
-
-/* Animation timeline component */
-
-.animation-timeline {
-  height: 100%;
-  overflow: hidden;
-  position: relative;
-  /* The timeline gets its background-image from a canvas element created in
-     /browser/devtools/animationinspector/utils.js drawGraphElementBackground
-     thanks to document.mozSetImageElement("time-graduations", canvas)
-     This is done so that the background can be built dynamically from script */
-  background-image: -moz-element(#time-graduations);
-  background-repeat: repeat-y;
-  /* The animations are drawn 150px from the left edge so that animated nodes
-     can be displayed in a sidebar */
-  background-position: var(--timeline-sidebar-width) 0;
-  display: flex;
-  flex-direction: column;
-}
-
-.animation-timeline .scrubber {
-  position: absolute;
-  height: 100%;
-  width: var(--timeline-sidebar-width);
-  border-right: 1px solid red;
-  box-sizing: border-box;
-  z-index: 1;
-  pointer-events: none;
-}
-
-.animation-timeline .scrubber::before {
-  content: "";
-  position: absolute;
-  top: 0;
-  width: 1px;
-  right: -6px;
-  border-top: 5px solid red;
-  border-left: 5px solid transparent;
-  border-right: 5px solid transparent;
-}
-
-.animation-timeline .time-header {
-  margin-left: var(--timeline-sidebar-width);
-  min-height: var(--toolbar-height);
-  overflow: hidden;
-  position: relative;
-  /* This is the same color as the time graduations in
-     browser/devtools/animationinspector/utils.js */
-  border-bottom: 1px solid rgba(128, 136, 144, .5);
-  cursor: col-resize;
-  -moz-user-select: none;
-}
-
-.animation-timeline .time-header .time-tick {
-  position: absolute;
-  top: 3px;
-}
-
-.animation-timeline .animations {
-  width: 100%;
-  overflow-y: auto;
-  overflow-x: hidden;
-  margin: 0;
-  padding: 0;
-  list-style-type: none;
-}
-
-/* Animation block widgets */
-
-.animation-timeline .animation {
-  margin: 4px 0;
-  height: var(--timeline-animation-height);
-  position: relative;
-}
-
-.animation-timeline .animation:nth-child(2n) {
-  background-color: var(--even-animation-timeline-background-color);
-}
-
-.animation-timeline .animation .target {
-  width: var(--timeline-sidebar-width);
-  overflow: hidden;
-  height: 100%;
-}
-
-.animation-timeline .animation-target {
-  background-color: transparent;
-}
-
-.animation-timeline .animation .time-block {
-  position: absolute;
-  top: 0;
-  left: var(--timeline-sidebar-width);
-  right: 0;
-  height: 100%;
-}
-
-/* Animation iterations */
-
-.animation-timeline .animation .iterations {
-  position: relative;
-  height: 100%;
-  box-sizing: border-box;
-
-  --timelime-border-color: var(--theme-body-color);
-  --timeline-background-color: var(--theme-splitter-color);
-
-  /* Iterations of the animation are displayed with a repeating linear-gradient
-     which size is dynamically changed from JS. The gradient only draws 1px
-     borders between each iteration. These borders must have the same color as
-     the border of this element */
-  background-image:
-    linear-gradient(to right,
-                    var(--timelime-border-color) 0,
-                    var(--timelime-border-color) 1px,
-                    transparent 1px,
-                    transparent 2px);
-  background-repeat: repeat-x;
-  background-position: -1px 0;
-  border: 1px solid var(--timelime-border-color);
-
-  /* The background color is set independently */
-  background-color: var(--timeline-background-color);
-}
-
-.animation-timeline .animation .cssanimation {
-  --timelime-border-color: var(--theme-highlight-lightorange);
-  --timeline-background-color: var(--theme-contrast-background);
-}
-
-.animation-timeline .animation .csstransition {
-  --timelime-border-color: var(--theme-highlight-bluegrey);
-  --timeline-background-color: var(--theme-highlight-blue);
-}
-
-.animation-timeline .animation .iterations.infinite {
-  border-right-width: 0;
-}
-
-.animation-timeline .animation .iterations.infinite::before,
-.animation-timeline .animation .iterations.infinite::after {
-  content: "";
-  position: absolute;
-  top: 0;
-  right: 0;
-  width: 0;
-  height: 0;
-  border-right: 4px solid var(--theme-body-background);
-  border-top: 4px solid transparent;
-  border-bottom: 4px solid transparent;
-}
-
-.animation-timeline .animation .iterations.infinite::after {
-  bottom: 0;
-  top: unset;
-}
-
-.animation-timeline .animation .name {
-  color: var(--theme-selection-color);
-  height: 100%;
-  width: 100%;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-  line-height: 150%;
-  padding: 0 2px;
-}
-
-.animation-timeline .animation .delay {
-  position: absolute;
-  top: 0;
-  /* Make sure the delay covers up the animation border */
-  transform: translate(-1px, -1px);
-  box-sizing: border-box;
-  height: calc(100% + 2px);
-
-  border: 1px solid var(--timelime-border-color);
-  border-width: 1px 0 1px 1px;
-  background-image: repeating-linear-gradient(45deg,
-                                              transparent,
-                                              transparent 1px,
-                                              var(--theme-selection-color) 1px,
-                                              var(--theme-selection-color) 4px);
-  background-color: var(--timelime-border-color);
-}
-
-.animation-timeline .animation .delay.negative {
-  /* Negative delays are displayed on top of the animation, so they need a
-     right border. Whereas normal delays are displayed just before the
-     animation, so there's already the animation's left border that serves as
-     a separation. */
-  border-width: 1px;
-}
-
-/* Animation target node gutter, contains a preview of the dom node */
-
-.animation-target {
-  background-color: var(--theme-toolbar-background);
-  padding: 1px 4px;
-  box-sizing: border-box;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-
-.animation-target .attribute-name {
-  padding-left: 4px;
-}
-
-.animation-target .node-selector {
-  background: url("chrome://browser/skin/devtools/vview-open-inspector.png") no-repeat 0 0;
-  padding-left: 16px;
-  margin-right: 5px;
-  cursor: pointer;
-}
-
-.animation-target .node-selector:hover {
-  background-position: -32px 0;
-}
-
-.animation-target .node-selector:active {
-  background-position: -16px 0;
-}
-
-/* Animation title gutter, contains the name, duration, iteration */
-
-.animation-title {
-  background-color: var(--theme-toolbar-background);
-  border-bottom: 1px solid var(--theme-splitter-color);
-  padding: 1px 4px;
-  word-wrap: break-word;
-  overflow: auto;
-}
-
-.animation-title .meta-data {
-  float: right;
-}
-
-.animation-title strong {
-  margin: 0 .5em;
-}
-
-.animation-title .meta-data .compositor-icon {
-    display: none;
-    background-image: url("animation-fast-track.svg");
-    background-repeat: no-repeat;
-    padding-left: 12px;
-    /* Make sure the icon is positioned above the timeline range input so that
-       its tooltip appears on hover */
-    z-index: 1;
-    position: relative;
-}
-
-/* Timeline wiget */
-
-.timeline {
-  height: var(--timeline-animation-height);
-  width: 100%;
-  display: flex;
-  flex-direction: row;
-  border-bottom: 1px solid var(--theme-splitter-color);
-}
-
-.timeline .playback-controls {
-  display: flex;
-  flex-direction: row;
-}
-
-/* Playback control buttons */
-
-.timeline .playback-controls button {
-  flex-grow: 1;
-  border-width: 0 1px 0 0;
-}
-
-.timeline .toggle::before {
-  background-image: url(debugger-pause.png);
-}
-
-.paused .timeline .toggle::before,
-.finished .timeline .toggle::before {
-  background-image: url(debugger-play.png);
-}
-
-.timeline .ff::before {
-  background-image: url(fast-forward.png);
-}
-
-.timeline .rw::before {
-  background-image: url(rewind.png);
-}
-
-@media (min-resolution: 1.1dppx) {
-  .timeline .toggle::before {
-    background-image: url(debugger-pause@2x.png);
-  }
-
-  .paused .timeline .toggle::before,
-  .finished .timeline .toggle::before {
-    background-image: url(debugger-play@2x.png);
-  }
-
-  .timeline .ff::before {
-    background-image: url(fast-forward@2x.png);
-  }
-
-  .timeline .rw::before {
-    background-image: url(rewind@2x.png);
-  }
-}
-
-.timeline .rate {
-  -moz-appearance: none;
-  text-align: center;
-  color: var(--theme-body-color);
-  border-right: 1px solid var(--theme-splitter-color);
-}
-
-/* Slider (input type range) container */
-
-.timeline .sliders-container {
-  flex-grow: 1;
-  height: 100%;
-  position: relative;
-  border-width: 1px 0;
-}
-
-.timeline .sliders-container .current-time {
-  position: absolute;
-  padding: 0;
-  margin: 0;
-  left: 0;
-  width: 100%;
-  height: 100%;
-}
-
-.timeline .sliders-container .current-time::-moz-range-thumb {
-  height: 100%;
-  width: 4px;
-  border-radius: 0;
-  border: none;
-  background: var(--theme-highlight-blue);
-}
-
-.timeline .sliders-container .current-time::-moz-range-track {
-  width: 100%;
-  height: 50px;
-  background: transparent;
-}
-
-/* Current time label */
-
-.timeline .time-display {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  width: 50px;
-  border-left: 1px solid var(--theme-splitter-color);
-  background: var(--theme-toolbar-background);
-}
\ No newline at end of file
diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/add.svg b/arc-firefox-theme/chrome/browser/devtools/app-manager/add.svg
deleted file mode 100644
index 4a8e12a..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/add.svg
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg xmlns="http://www.w3.org/2000/svg" width="64px" height="64px" viewBox="0 0 64 64">
-  <path fill="#00b2f7" d="M32.336,3.894c-15.74,0-28.5,12.76-28.5,28.5s12.76,28.5,28.5,28.5s28.5-12.76,28.5-28.5 S48.076,3.894,32.336,3.894z M44.86,36.966h-7.823v7.62c0,2.582-2.12,4.702-4.702,4.702c-2.584,0-4.704-2.12-4.704-4.702v-7.62 h-7.817c-2.52,0-4.572-2.056-4.572-4.572s2.053-4.572,4.572-4.572h7.817v-7.62c0-2.582,2.12-4.702,4.704-4.702 c2.582,0,4.702,2.12,4.702,4.702v7.62h7.823c2.514,0,4.57,2.056,4.57,4.572S47.374,36.966,44.86,36.966z"/>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/connection-footer.css b/arc-firefox-theme/chrome/browser/devtools/app-manager/connection-footer.css
deleted file mode 100644
index dc51832..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/connection-footer.css
+++ /dev/null
@@ -1,224 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/************** LAYOUT **************/
-
-#connection-footer {
-  display: flex;
-  flex-direction: column;
-  height: 50px;
-}
-
-#banners-and-logs {
-  display: flex;
-  flex-grow: 1;
-  max-height: 100%;
-}
-
-#logs {
-  display: flex;
-  width: 40%;
-  padding: 0;
-  width: 100%;
-}
-
-.banner {
-  display: none;
-  width: 60%;
-}
-
-#connection-footer[status="connected"]     #banner-connected,
-#connection-footer[status="connecting"]    #banner-connecting,
-#connection-footer[status="disconnected"]  #banner-disconnected,
-#connection-footer[status="disconnecting"] #banner-disconnecting {
-  display: flex;
-}
-
-body.show-simulators .banner,
-body.edit-connection .banner {
-  display: none !important;
-}
-
-body.show-simulators #banner-simulators,
-body.edit-connection #banner-editing {
-  display: flex !important;
-}
-
-#banner-logs {
-  width: 40%;
-  display: flex;
-}
-
-#logs > pre {
-  overflow: auto;
-  white-space: pre-line;
-}
-
-#status.banner-box {
-  width: 100% !important;
-}
-
-.banner-box {
-  display: flex;
-  flex-direction: column;
-  justify-content: center;
-  width: 100%;
-}
-
-#banner-connected > .banner-box {
-  align-items: flex-start;
-}
-
-#start-simulator-box {
-  display: inline;
-}
-
-/************** PIXELS **************/
-
-* {
-  margin: 0;
-  padding: 0;
-  box-sizing: border-box;
-  font-size: 0.9rem;
-}
-
-body {
-  color: #333;
-  background-color: white;
-  font-family: Lucida Grande, Helvetica, Helvetica Neue, sans-serif;
-}
-
-button {
-  background: linear-gradient(to bottom, #49535C, #394148);
-  box-shadow: 0px 1px 1px #3C444D, inset 0 1px 0px rgba(255,255,255,0.1);
-  color: #9FA6AD;
-  text-shadow: 0px 1px 1px rgba(0,0,0,0.6);
-  border: 1px solid #111;
-  cursor: pointer;
-  border-radius: 3px;
-  padding: 3px 10px;
-}
-
-button.left {
-  margin-right: 0px;
-  border-top-right-radius: 0;
-  border-bottom-right-radius: 0;
-}
-
-button.right {
-  margin-left: -6px;
-  border-top-left-radius: 0;
-  border-bottom-left-radius: 0;
-}
-
-button.action-primary {
-  background: linear-gradient(to bottom, #276DA3, #1E5580);
-  color: #EEE;
-}
-
-button.action-cancel {
-  background: linear-gradient(to bottom, #B32B02, #942300);
-  color: #EEE;
-}
-
-#banners-and-logs {
-  border-top: #111 solid;
-  border-width: 1px 0;
-  background: linear-gradient(to bottom, #323A42, #29313A);
-  color: #A8BABF;
-  box-shadow: inset 0 0 1px #424A51;
-}
-
-#status {
-  background: linear-gradient(to bottom, #454F59, #404952);
-  box-shadow: inset 0 0 1px #606D78, inset 0 1px 0 #5E6973;
-}
-
-#logs > pre {
-  border: 1px solid #111;
-  box-shadow: 0px 1px 1px #49525A, inset 0 0 5px rgba(0,0,0,0.3);
-  font-size: 10px;
-  background: #22272D;
-  padding: 5px;
-  height: 100%;
-  padding-left: 20px;
-  position: relative;
-}
-
-#logs > pre span{
-  text-shadow: 0 1px 2px #000;
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/default-app-icon.png b/arc-firefox-theme/chrome/browser/devtools/app-manager/default-app-icon.png
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index f186d9c..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/default-app-icon.png
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/device.css b/arc-firefox-theme/chrome/browser/devtools/app-manager/device.css
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index fc6efd9..0000000
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/error.svg b/arc-firefox-theme/chrome/browser/devtools/app-manager/error.svg
deleted file mode 100644
index 7876e46..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/error.svg
+++ /dev/null
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/help.css b/arc-firefox-theme/chrome/browser/devtools/app-manager/help.css
deleted file mode 100644
index 087819e..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/help.css
+++ /dev/null
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/index-icons.svg b/arc-firefox-theme/chrome/browser/devtools/app-manager/index-icons.svg
deleted file mode 100644
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/index.css b/arc-firefox-theme/chrome/browser/devtools/app-manager/index.css
deleted file mode 100644
index cb3f876..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/index.css
+++ /dev/null
@@ -1,103 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-* {
-  margin: 0;
-  padding: 0;
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/noise.png b/arc-firefox-theme/chrome/browser/devtools/app-manager/noise.png
deleted file mode 100644
index b3c42ac..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/noise.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/plus.svg b/arc-firefox-theme/chrome/browser/devtools/app-manager/plus.svg
deleted file mode 100644
index d21764e..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/plus.svg
+++ /dev/null
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-   - License, v. 2.0. If a copy of the MPL was not distributed with this
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-<svg xmlns="http://www.w3.org/2000/svg" width="64px" height="64px" viewBox="0 0 64 64">
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/projects.css b/arc-firefox-theme/chrome/browser/devtools/app-manager/projects.css
deleted file mode 100644
index 98b2289..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/projects.css
+++ /dev/null
@@ -1,556 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-* {
-  margin: 0;
-  padding: 0;
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-  font-size: 0.9rem;
-}
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deleted file mode 100644
index 9b98e8f..0000000
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/rocket.svg b/arc-firefox-theme/chrome/browser/devtools/app-manager/rocket.svg
deleted file mode 100644
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diff --git a/arc-firefox-theme/chrome/browser/devtools/app-manager/warning.svg b/arc-firefox-theme/chrome/browser/devtools/app-manager/warning.svg
deleted file mode 100644
index d26e2e6..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/app-manager/warning.svg
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diff --git a/arc-firefox-theme/chrome/browser/devtools/arrow-e@2x.png b/arc-firefox-theme/chrome/browser/devtools/arrow-e@2x.png
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deleted file mode 100644
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diff --git a/arc-firefox-theme/chrome/browser/devtools/breadcrumbs-scrollbutton.png b/arc-firefox-theme/chrome/browser/devtools/breadcrumbs-scrollbutton.png
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diff --git a/arc-firefox-theme/chrome/browser/devtools/breadcrumbs-scrollbutton@2x.png b/arc-firefox-theme/chrome/browser/devtools/breadcrumbs-scrollbutton@2x.png
deleted file mode 100644
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deleted file mode 100644
index efeac51..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/canvasdebugger.css
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-
-.filmstrip-thumbnail {
-  -moz-border-end: 1px solid var(--theme-splitter-color)
-}
-
-#snapshot-filmstrip > .filmstrip-thumbnail:hover,
-#snapshot-filmstrip:not(:hover) > .filmstrip-thumbnail[highlighted] {
-  border: 1px solid var(--theme-highlight-blue);
-  margin: 0 0 0 -1px;
-  padding: 0;
-  opacity: 0.66;
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/close.png b/arc-firefox-theme/chrome/browser/devtools/close.png
deleted file mode 100644
index b539412..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/close.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/close@2x.png b/arc-firefox-theme/chrome/browser/devtools/close@2x.png
deleted file mode 100644
index 79ef6ce..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/close@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-console.png b/arc-firefox-theme/chrome/browser/devtools/command-console.png
deleted file mode 100644
index 5c3740e..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-console.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-console@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-console@2x.png
deleted file mode 100644
index 00bdc35..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-console@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-eyedropper.png b/arc-firefox-theme/chrome/browser/devtools/command-eyedropper.png
deleted file mode 100644
index a96b8eb..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-eyedropper.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-eyedropper@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-eyedropper@2x.png
deleted file mode 100644
index edfe4c1..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-eyedropper@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-frames.png b/arc-firefox-theme/chrome/browser/devtools/command-frames.png
deleted file mode 100755
index 5c37ccb..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-frames.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-frames@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-frames@2x.png
deleted file mode 100755
index 84b37d3..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-frames@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-paintflashing.png b/arc-firefox-theme/chrome/browser/devtools/command-paintflashing.png
deleted file mode 100644
index 244fb3c..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-paintflashing.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-paintflashing@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-paintflashing@2x.png
deleted file mode 100644
index 77435bf..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-paintflashing@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-pick.png b/arc-firefox-theme/chrome/browser/devtools/command-pick.png
deleted file mode 100644
index 37ce97c..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-pick.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-pick@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-pick@2x.png
deleted file mode 100644
index 88d739e..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-pick@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-responsivemode.png b/arc-firefox-theme/chrome/browser/devtools/command-responsivemode.png
deleted file mode 100644
index 2cad915..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-responsivemode.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-responsivemode@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-responsivemode@2x.png
deleted file mode 100644
index 6fce404..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-responsivemode@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-rulers.png b/arc-firefox-theme/chrome/browser/devtools/command-rulers.png
deleted file mode 100644
index ae7c705..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-rulers.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-rulers@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-rulers@2x.png
deleted file mode 100644
index 8378959..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-rulers@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-scratchpad.png b/arc-firefox-theme/chrome/browser/devtools/command-scratchpad.png
deleted file mode 100644
index f9470b4..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-scratchpad.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-scratchpad@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-scratchpad@2x.png
deleted file mode 100644
index ea5630f..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-scratchpad@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-screenshot.png b/arc-firefox-theme/chrome/browser/devtools/command-screenshot.png
deleted file mode 100644
index f6da8e9..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-screenshot.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-screenshot@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-screenshot@2x.png
deleted file mode 100644
index b7cdced..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-screenshot@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-tilt.png b/arc-firefox-theme/chrome/browser/devtools/command-tilt.png
deleted file mode 100644
index 6909b0a..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-tilt.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/command-tilt@2x.png b/arc-firefox-theme/chrome/browser/devtools/command-tilt@2x.png
deleted file mode 100644
index 2c35d19..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/command-tilt@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/commandline-icon.png b/arc-firefox-theme/chrome/browser/devtools/commandline-icon.png
deleted file mode 100644
index e51f67f..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/commandline-icon.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/commandline-icon@2x.png b/arc-firefox-theme/chrome/browser/devtools/commandline-icon@2x.png
deleted file mode 100644
index 407fdae..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/commandline-icon@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/commandline.css b/arc-firefox-theme/chrome/browser/devtools/commandline.css
deleted file mode 100644
index 7666eed..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/commandline.css
+++ /dev/null
@@ -1,172 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-
-/* NOTE: THESE NEED TO STAY IN SYNC WITH LIGHT-THEME.CSS AND DARK-THEME.CSS.
-   We are copy/pasting variables from light-theme and dark-theme,
-   since they aren't loaded in this context (within commandlineoutput.xhtml
-   and commandlinetooltip.xhtml). */
-:root[devtoolstheme="light"] {
-  --gcli-background-color: #ebeced; /* --theme-tab-toolbar-background */
-  --gcli-input-focused-background: #f7f7f7; /* --theme-sidebar-background */
-  --gcli-input-color: #18191a; /* --theme-body-color */
-  --gcli-border-color: #aaaaaa; /* --theme-splitter-color */
-}
-
-:root[devtoolstheme="dark"] {
-  --gcli-background-color: #343c45; /* --theme-toolbar-background */
-  --gcli-input-focused-background: #252c33; /* --theme-tab-toolbar-background */
-  --gcli-input-color: #b6babf; /* --theme-body-color-alt */
-  --gcli-border-color: black; /* --theme-splitter-color */
-}
-
-.gcli-body {
-  margin: 0;
-  font: message-box;
-  color: var(--gcli-input-color);
-}
-
-#gcli-output-root,
-#gcli-tooltip-root {
-  border: 1px solid var(--gcli-border-color);
-  border-radius: 3px;
-  background-color: var(--gcli-background-color);
-}
-
-#gcli-output-root {
-  padding: 5px 10px;
-  border-bottom-left-radius: 0;
-  border-bottom-right-radius: 0;
-  border-bottom: 0;
-}
-
-#gcli-tooltip-root {
-  padding: 5px 0px;
-}
-
-#gcli-tooltip-connector {
-  margin-top: -1px;
-  margin-left: 8px;
-  width: 20px;
-  height: 10px;
-  border-left: 1px solid var(--gcli-border-color);
-  border-right: 1px solid var(--gcli-border-color);
-  background-color: var(--gcli-background-color);
-}
-
-.gcli-tt-description,
-.gcli-tt-error {
-  padding: 0 10px;
-}
-
-.gcli-row-out {
-  padding: 0 5px;
-  line-height: 1.2em;
-  border-top: none;
-  border-bottom: none;
-  color: var(--gcli-input-color);
-}
-
-.gcli-row-out p,
-.gcli-row-out h1,
-.gcli-row-out h2,
-.gcli-row-out h3 {
-  margin: 5px 0;
-}
-
-.gcli-row-out h1,
-.gcli-row-out h2,
-.gcli-row-out h3,
-.gcli-row-out h4,
-.gcli-row-out h5,
-.gcli-row-out th,
-.gcli-row-out strong,
-.gcli-row-out pre {
-  color: var(--gcli-input-color);
-}
-
-.gcli-row-out pre {
-  font-size: 80%;
-}
-
-.gcli-row-out td {
-  white-space: nowrap;
-}
-
-.gcli-out-shortcut,
-.gcli-help-synopsis {
-  padding: 0 3px;
-  margin: 0 4px;
-  font-weight: normal;
-  font-size: 90%;
-  border-radius: 3px;
-  background-color: var(--gcli-background-color);
-  border: 1px solid var(--gcli-border-color);
-}
-
-.gcli-out-shortcut:before,
-.gcli-help-synopsis:before {
-  color: var(--gcli-input-color);
-  -moz-padding-end: 2px;
-}
-
-.gcli-help-arrow {
-  color: #666;
-}
-
-.gcli-help-description {
-  margin: 0 20px;
-  padding: 0;
-}
-
-.gcli-help-parameter {
-  margin: 0 30px;
-  padding: 0;
-}
-
-.gcli-help-header {
-  margin: 10px 0 6px;
-}
-
-.gcli-menu-name {
-  -moz-padding-start: 8px;
-}
-
-.gcli-menu-desc {
-  -moz-padding-end: 8px;
-  color: var(--gcli-input-color);
-}
-
-.gcli-menu-name:hover,
-.gcli-menu-desc:hover {
-  background-color: var(--gcli-input-focused-background);
-}
-
-.gcli-menu-highlight,
-.gcli-menu-highlight:hover {
-  background-color: hsla(0,100%,100%,.1);
-}
-
-.gcli-menu-typed {
-  color: hsl(25,78%,50%);
-}
-
-.gcli-menu-more {
-  font-size: 80%;
-  text-align: end;
-  -moz-padding-end: 8px;
-}
-
-.gcli-addon-disabled {
-  opacity: 0.6;
-  text-decoration: line-through;
-}
-
-.gcli-breakpoint-label {
-  font-weight: bold;
-}
-
-.gcli-breakpoint-lineText {
-  font-family: monospace;
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/common.css b/arc-firefox-theme/chrome/browser/devtools/common.css
index 0a655c7..fb6a8fe 100644
--- a/arc-firefox-theme/chrome/browser/devtools/common.css
+++ b/arc-firefox-theme/chrome/browser/devtools/common.css
@@ -1,274 +1,10 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-:root {
-  font: message-box;
-  --monospace-font-family: monospace;
-}
+ /**
+  * This file only exists to support add-ons which import this style sheet at a
+  * specific path.
+  */
 
-.devtools-monospace {
-  font-family: var(--monospace-font-family);
-  font-size: 80%;
-}
-
-/* Bottom-docked toolbox minimize transition */
-.devtools-toolbox-bottom-iframe {
-  transition: margin-bottom .1s;
-}
-
-/* Splitters */
-.devtools-horizontal-splitter {
-  -moz-appearance: none;
-  background-image: none;
-  background-color: transparent;
-  border: 0;
-  border-bottom: 1px solid rgba(118, 121, 125, .5);
-  min-height: 3px;
-  height: 3px;
-  margin-top: -3px;
-  position: relative;
-}
-
-.devtools-side-splitter {
-  -moz-appearance: none;
-  background-image: none;
-  background-color: transparent;
-  border: 0;
-  -moz-border-end: 1px solid rgba(118, 121, 125, .5);
-  min-width: 3px;
-  width: 3px;
-  -moz-margin-start: -3px;
-  position: relative;
-  cursor: e-resize;
-}
-
-.devtools-horizontal-splitter.disabled,
-.devtools-side-splitter.disabled {
-  pointer-events: none;
-}
-
-.devtools-toolbox-side-iframe {
-  min-width: 465px;
-}
-
-/* Autocomplete Popup */
-/* Dark and light theme */
-
-.devtools-autocomplete-popup {
-  -moz-appearance: none !important;
-  box-shadow: 0 1px 0 hsla(209,29%,72%,.25) inset;
-  background-color: transparent;
-  border-radius: 3px;
-  overflow-x: hidden;
-  max-height: 32rem;
-}
-
-.devtools-autocomplete-listbox {
-  -moz-appearance: none !important;
-  background-color: transparent;
-  border-width: 0px !important;
-}
-
-.devtools-autocomplete-listbox > richlistitem,
-.devtools-autocomplete-listbox > richlistitem[selected] {
-  width: 100%;
-  background-color: transparent;
-  border-radius: 4px;
-}
-
-.devtools-autocomplete-listbox.dark-theme > richlistitem[selected],
-.devtools-autocomplete-listbox.dark-theme > richlistitem:hover {
-  background-color: rgba(0,0,0,0.5);
-}
-
-.devtools-autocomplete-listbox.dark-theme > richlistitem[selected] > .autocomplete-value,
-.devtools-autocomplete-listbox:focus.dark-theme > richlistitem[selected] > .initial-value {
-  color: hsl(208,100%,60%);
-}
-
-.devtools-autocomplete-listbox.dark-theme > richlistitem[selected] > label {
-  color: #eee;
-}
-
-.devtools-autocomplete-listbox.dark-theme > richlistitem > label {
-  color: #ccc;
-}
-
-.devtools-autocomplete-listbox > richlistitem > .initial-value,
-.devtools-autocomplete-listbox > richlistitem > .autocomplete-value {
-  margin: 0;
-  padding: 1px 0;
-}
-
-.devtools-autocomplete-listbox > richlistitem > .autocomplete-count {
-  text-align: end;
-}
-
-/* Rest of the dark and light theme */
-
-.devtools-autocomplete-popup,
-.theme-dark .CodeMirror-hints,
-.theme-dark .CodeMirror-Tern-tooltip {
-  border: 1px solid hsl(210,11%,10%);
-  background-image: linear-gradient(to bottom, hsla(209,18%,18%,0.9), hsl(210,11%,16%));
-}
-
-.devtools-autocomplete-popup.light-theme,
-.light-theme .CodeMirror-hints,
-.light-theme .CodeMirror-Tern-tooltip {
-  border: 1px solid hsl(210,24%,90%);
-  background-image: linear-gradient(to bottom, hsla(209,18%,100%,0.9), hsl(210,24%,95%));
-}
-
-.devtools-autocomplete-popup.light-theme {
-  box-shadow: 0 1px 0 hsla(209,29%,90%,.25) inset;
-}
-
-.devtools-autocomplete-listbox.light-theme > richlistitem[selected],
-.devtools-autocomplete-listbox.light-theme > richlistitem:hover {
-  background-color: rgba(128,128,128,0.3);
-}
-
-.devtools-autocomplete-listbox.light-theme > richlistitem[selected] > .autocomplete-value,
-.devtools-autocomplete-listbox:focus.light-theme > richlistitem[selected] > .initial-value {
-  color: #222;
-}
-
-.devtools-autocomplete-listbox.light-theme > richlistitem > label {
-  color: #666;
-}
-
-/* Tooltip widget (see browser/devtools/shared/widgets/Tooltip.js) */
-
-.devtools-tooltip .panel-arrowcontent {
-  padding: 4px;
-}
-
-.devtools-tooltip .panel-arrowcontainer {
-  /* Reseting the transition used when panels are shown */
-  transition: none;
-  /* Panels slide up/down/left/right when they appear using a transform.
-  Since we want to remove the transition, we don't need to transform anymore
-  plus it can interfeer by causing mouseleave events on the underlying nodes */
-  transform: none;
-}
-
-.devtools-tooltip[clamped-dimensions] {
-  min-height: 100px;
-  max-height: 400px;
-  min-width: 100px;
-  max-width: 400px;
-}
-.devtools-tooltip[clamped-dimensions-no-min-height] {
-  min-height: 0;
-  max-height: 400px;
-  min-width: 100px;
-  max-width: 400px;
-}
-.devtools-tooltip[clamped-dimensions-no-max-or-min-height] {
-  min-width: 400px;
-  max-width: 400px;
-}
-.devtools-tooltip[clamped-dimensions] .panel-arrowcontent,
-.devtools-tooltip[clamped-dimensions-no-min-height] .panel-arrowcontent,
-.devtools-tooltip[clamped-dimensions-no-max-or-min-height] .panel-arrowcontent {
-  overflow: hidden;
-}
-.devtools-tooltip[wide] {
-  max-width: 600px;
-}
-
-/* Tooltip: Simple Text */
-
-.devtools-tooltip-simple-text {
-  max-width: 400px;
-  margin: 0 -4px; /* Compensate for the .panel-arrowcontent padding. */
-  padding: 8px 12px;
-  white-space: pre-wrap;
-}
-
-.devtools-tooltip-simple-text:first-child {
-  margin-top: -4px;
-}
-
-.devtools-tooltip-simple-text:last-child {
-  margin-bottom: -4px;
-}
-
-/* Tooltip: Alert Icon */
-
-.devtools-tooltip-alert-icon {
-  width: 32px;
-  height: 32px;
-  margin: 6px;
-  -moz-margin-end: 20px;
-}
-
-.devtools-tooltip-alert-icon {
-  list-style-image: url("chrome://global/skin/icons/warning-32.png");
-}
-
-/* Tooltip: Variables View */
-
-.devtools-tooltip-variables-view-box {
-  margin: -4px; /* Compensate for the .panel-arrowcontent padding. */
-}
-
-.devtools-tooltip-variables-view-box .variable-or-property > .title {
-  -moz-padding-end: 6px;
-}
-
-/* Tooltip: Tiles */
-
-.devtools-tooltip-tiles {
-  background-color: #eee;
-  background-image: linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%, #ccc),
-    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%, #ccc);
-  background-size: 20px 20px;
-  background-position: 0 0, 10px 10px;
-}
-
-.devtools-tooltip-iframe {
-  border: none;
-  background: transparent;
-}
-
-/* Eyedropper Widget */
-
-.devtools-eyedropper-panel {
-  pointer-events: none;
-  -moz-appearance: none;
-  width: 156px;
-  height: 120px;
-  background-color: transparent;
-  border: none;
-}
-
-/* links to source code, like displaying `myfile.js:45` */
-
-.devtools-source-link {
-  font-family: var(--monospace-font-family);
-  color: var(--theme-highlight-blue);
-  cursor: pointer;
-  white-space: nowrap;
-  display: flex;
-  text-decoration: none;
-  font-size: 11px;
-  width: 12em; /* probably should be changed for each tool */
-}
-
-.devtools-source-link:hover {
-  text-decoration: underline;
-}
-
-.devtools-source-link > .filename {
-  text-overflow: ellipsis;
-  text-align: end;
-  overflow: hidden;
-  margin: 2px 0px;
-  cursor: pointer;
-}
-
-.devtools-source-link > .line-number {
-  flex: none;
-  margin: 2px 0px;
-  cursor: pointer;
-}
+@import url("chrome://devtools/skin/common.css");
diff --git a/arc-firefox-theme/chrome/browser/devtools/computedview.css b/arc-firefox-theme/chrome/browser/devtools/computedview.css
deleted file mode 100644
index a4eff43..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/computedview.css
+++ /dev/null
@@ -1,203 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* From content */
-
-* {
-  box-sizing: border-box;
-}
-
-:root {
-  height: 100%;
-}
-
-body {
-  margin: 0;
-  display : flex;
-  flex-direction: column;
-  height: 100%;
-}
-
-#propertyContainer {
-  -moz-user-select: text;
-  overflow: auto;
-  min-height: 0;
-  flex: 1;
-}
-
-.row-striped {
-  background: var(--theme-body-background);
-}
-
-.property-view-hidden,
-.property-content-hidden {
-  display: none;
-}
-
-.property-view {
-  clear: both;
-  padding: 2px 0 2px 17px;
-}
-
-.property-view > * {
-  display: inline-block;
-  vertical-align: middle;
-}
-
-.property-name {
-  /* -12px is so the expander triangle isn't pushed up above the property */
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-
-.theme-dark .results-panel-item-label {
-  color: var(--theme-selection-color);
-}
-
-.theme-light .results-panel-item-label {
-  color: var(--theme-body-color);
-}
-
-.results-panel-item-label-before {
-  color: var(--theme-highlight-bluegrey);
-}
-
-.results-panel-item-label-below {
-  color: var(--theme-content-color3);
-}
-
-#results-panel .selected label {
-  /* Text inside a selected item should not be custom colored. */
-  color: inherit !important;
-}
-
-/* Sources search view */
-
-#globalsearch {
-  min-height: 10px;
-  max-height: 50vh;
-}
-
-.dbg-results-header {
-  -moz-padding-start: 6px;
-}
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-.dbg-results-header-location {
-  font-weight: 600;
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-.dbg-results-header-match-count {
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-.dbg-results-line-number {
-  min-width: 3em;
-  -moz-border-end: 1px solid rgba(128,128,128,0.2);
-  -moz-padding-end: 4px;
-  text-align: end;
-}
-
-.dbg-results-line-contents {
-  -moz-padding-start: 4px;
-}
-
-.dbg-results-line-contents-string[match=true] {
-  background-color: rgba(255,255,0,0.2);
-  border: 1px solid rgba(128,128,128,0.7);
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-.dbg-results-line-contents-string[match=true][focusing] {
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-.dbg-results-line-contents-string[match=true][focused] {
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-.dbg-results-header {
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-.theme-dark .dbg-results-header {
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-.theme-light .dbg-results-header {
-  color: var(--theme-content-color3);
-}
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-.theme-dark .dbg-search-result:hover {
-  background-color: rgba(29,79,115,.2); /* Select highlight blue at 40% alpha */
-}
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-.theme-light .dbg-search-result:hover {
-  background-color: rgba(76,158,217,.2); /* Select highlight blue at 40% alpha */
-}
-
-.dbg-results-header-match-count {
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-.dbg-results-line-number {
-  background-color: var(--theme-tab-toolbar-background);
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-.theme-light .dbg-results-line-contents-string[match=true] {
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-#resume[checked] {
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-  #resume {
-    list-style-image: url(debugger-pause@2x.png);
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-  #resume[checked] {
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-  background: none;
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-@media (min-resolution: 1.1dppx) {
-  #instruments-pane-toggle {
-    list-style-image: url(debugger-collapse@2x.png);
-    -moz-image-region: rect(0px,32px,32px,0px);
-  }
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-  #instruments-pane-toggle[pane-collapsed] {
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-  margin: 0 !important;
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diff --git a/arc-firefox-theme/chrome/browser/devtools/dock-bottom-maximize@2x.png b/arc-firefox-theme/chrome/browser/devtools/dock-bottom-maximize@2x.png
deleted file mode 100644
index feb4d78..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/dock-bottom-maximize@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/dock-bottom-minimize@2x.png b/arc-firefox-theme/chrome/browser/devtools/dock-bottom-minimize@2x.png
deleted file mode 100644
index a82983c..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/dock-bottom-minimize@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/dock-bottom@2x.png b/arc-firefox-theme/chrome/browser/devtools/dock-bottom@2x.png
deleted file mode 100644
index d5df16f..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/dock-bottom@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/dock-side@2x.png b/arc-firefox-theme/chrome/browser/devtools/dock-side@2x.png
deleted file mode 100644
index 17de7f1..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/dock-side@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/dropmarker.svg b/arc-firefox-theme/chrome/browser/devtools/dropmarker.svg
deleted file mode 100644
index 7592790..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/dropmarker.svg
+++ /dev/null
@@ -1,6 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public

-   - License, v. 2.0. If a copy of the MPL was not distributed with this

-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

-<svg xmlns="http://www.w3.org/2000/svg" width="8" height="4" viewBox="0 0 8 4">

-  <polygon points="0,0 4,4 8,0" fill="#b6babf"/>

-</svg>

diff --git a/arc-firefox-theme/chrome/browser/devtools/editor-breakpoint.png b/arc-firefox-theme/chrome/browser/devtools/editor-breakpoint.png
deleted file mode 100644
index 401f26b..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/editor-breakpoint.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/editor-breakpoint@2x.png b/arc-firefox-theme/chrome/browser/devtools/editor-breakpoint@2x.png
deleted file mode 100644
index 7253aee..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/editor-breakpoint@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/editor-debug-location.png b/arc-firefox-theme/chrome/browser/devtools/editor-debug-location.png
deleted file mode 100644
index d590573..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/editor-debug-location.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/editor-debug-location@2x.png b/arc-firefox-theme/chrome/browser/devtools/editor-debug-location@2x.png
deleted file mode 100644
index b1dd7ee..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/editor-debug-location@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/editor-error.png b/arc-firefox-theme/chrome/browser/devtools/editor-error.png
deleted file mode 100644
index 39ef81e..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/editor-error.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/eyedropper.css b/arc-firefox-theme/chrome/browser/devtools/eyedropper.css
deleted file mode 100644
index cf22caf..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/eyedropper.css
+++ /dev/null
@@ -1,45 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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-  overflow: hidden;
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-  width: 16px;
-  height: 16px;
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-  margin: 3px;
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-window {
-  /* inexplicably, otherwise background shows up on Linux */
-  border: 1px solid transparent;
-  background-color: transparent;
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deleted file mode 100644
index f2c6c52..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/fast-forward.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/fast-forward@2x.png b/arc-firefox-theme/chrome/browser/devtools/fast-forward@2x.png
deleted file mode 100644
index 4c3cf88..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/fast-forward@2x.png
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deleted file mode 100644
index ae6f221..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/filetype-dir-close.svg
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>

-<!-- This Source Code Form is subject to the terms of the Mozilla Public

-   - License, v. 2.0. If a copy of the MPL was not distributed with this

-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

-<svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg" fill="#0A0805" width="16" height="16">

-  <path d="M 0.00,160.00 L 512.00,160.00 L 480.00,480.00 L 32.00,480.00 L 0.00,160.00 Z M 464.00,96.00 L 480.00,128.00 L 32.00,128.00 L 64.00,64.00 L 240.00,64.00 L 256.00,96.00 L 464.00,96.00 Z"/>

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diff --git a/arc-firefox-theme/chrome/browser/devtools/filetype-dir-open.svg b/arc-firefox-theme/chrome/browser/devtools/filetype-dir-open.svg
deleted file mode 100644
index c7fafc2..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/filetype-dir-open.svg
+++ /dev/null
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-<?xml version="1.0" encoding="UTF-8"?>

-<!-- This Source Code Form is subject to the terms of the Mozilla Public

-   - License, v. 2.0. If a copy of the MPL was not distributed with this

-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

-<svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg" fill="#0A0805" width="16" height="16">

-  <path d="M 416.00,480.00L 512.00,224.00L 96.00,224.00L0.00,480.00 zM 64.00,192.00 L 0.00,480.00 L 0.00,64.00 L 144.00,64.00 L 208.00,128.00 L 416.00,128.00 L 416.00,192.00 Z"/>

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diff --git a/arc-firefox-theme/chrome/browser/devtools/filetype-globe.svg b/arc-firefox-theme/chrome/browser/devtools/filetype-globe.svg
deleted file mode 100644
index a5580b4..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/filetype-globe.svg
+++ /dev/null
@@ -1,6 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public

-   - License, v. 2.0. If a copy of the MPL was not distributed with this

-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

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diff --git a/arc-firefox-theme/chrome/browser/devtools/filetype-store.svg b/arc-firefox-theme/chrome/browser/devtools/filetype-store.svg
deleted file mode 100644
index c85c560..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/filetype-store.svg
+++ /dev/null
@@ -1,8 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg width="16" xmlns="http://www.w3.org/2000/svg" height="16" viewBox="0 0 16 16" fill="#0A0805">
-  <path d="m1.3,12.5v-2.4c0,0 0,2.5 6.7,2.5 6.7,0 6.7-2.5 6.7-2.5v2.4c0,0 0,2.7-6.8,2.7-6.6,0-6.6-2.7-6.6-2.7z"/>
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-  <path d="m1.3,8.7v-2.4c0,0 0,2.5 6.7,2.5 6.7,0 6.7-2.5 6.7-2.5v2.4c0,0 0,2.7-6.8,2.7-6.6-0-6.6-2.7-6.6-2.7z"/>
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diff --git a/arc-firefox-theme/chrome/browser/devtools/filter-swatch.svg b/arc-firefox-theme/chrome/browser/devtools/filter-swatch.svg
deleted file mode 100644
index 1f63b4f..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/filter-swatch.svg
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 12" width="12px" height="12px">
-  <mask id="mask">
-    <rect width="100%" height="100%" fill="#fff"/>
-    <polygon points="12,0 0,0 0,12"/>
-  </mask>
-  <circle cx="6" cy="6" r="6" fill="#fff"/>
-  <circle cx="6" cy="6" r="6" mask="url(#mask)" fill="#aeb0b1"/>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/filters.svg b/arc-firefox-theme/chrome/browser/devtools/filters.svg
deleted file mode 100644
index 700fdbf..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/filters.svg
+++ /dev/null
@@ -1,25 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<svg height="0" xmlns="http://www.w3.org/2000/svg">
-  <filter id="invert" x="0%" y="0%" width="100%" height="100%"
-          primitiveUnits="objectBoundingBox">
-    <feComponentTransfer>
-      <feFuncR type="table" tableValues=".1 0"/>
-      <feFuncG type="table" tableValues=".1 0"/>
-      <feFuncB type="table" tableValues=".1 0"/>
-    </feComponentTransfer>
-  </filter>
-
-  <!-- Web Audio Gradients -->
-  <linearGradient id="bypass-light" x1="6%" y1="8%" x2="12%" y2="12%" spreadMethod="repeat">
-    <stop offset="0%" stop-color="#f0f1f2"/> <!-- theme-toolbar-background -->
-    <stop offset="50%" stop-color="#fff"/>
-  </linearGradient>
-
-  <linearGradient id="bypass-dark" x1="6%" y1="8%" x2="12%" y2="12%" spreadMethod="repeat">
-    <stop offset="0%" stop-color="#343c45"/> <!-- theme-toolbar-background -->
-    <stop offset="50%" stop-color="transparent"/>
-  </linearGradient>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/floating-scrollbars-light.css b/arc-firefox-theme/chrome/browser/devtools/floating-scrollbars-light.css
deleted file mode 100644
index 01b622f..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/floating-scrollbars-light.css
+++ /dev/null
@@ -1,10 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-@import url("chrome://browser/skin/devtools/floating-scrollbars.css");
-
-scrollbar thumb {
-  background-color: rgba(170,170,170,0.2) !important;
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/floating-scrollbars.css b/arc-firefox-theme/chrome/browser/devtools/floating-scrollbars.css
deleted file mode 100644
index 61c66c8..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/floating-scrollbars.css
+++ /dev/null
@@ -1,34 +0,0 @@
-@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
-
-scrollbar {
-  -moz-appearance: none !important;
-  position: relative;
-  background-color: transparent;
-  background-image: none;
-  z-index: 2147483647;
-  padding: 2px;
-}
-
-/* Scrollbar code will reset the margin to the correct side depending on
-   where layout actually puts the scrollbar */
-scrollbar[orient="vertical"] {
-  margin-left: -10px;
-  min-width: 10px;
-  max-width: 10px;
-}
-
-scrollbar[orient="horizontal"] {
-  margin-top: -10px;
-  min-height: 10px;
-  max-height: 10px;
-}
-
-scrollbar thumb {
-  -moz-appearance: none !important;
-  border-width: 0px !important;
-  background-color: rgba(170,170,170,0.2) !important;
-  border-radius: 3px !important;
-}
-scrollbar scrollbarbutton, scrollbar gripper {
-  display: none;
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/font-inspector.css b/arc-firefox-theme/chrome/browser/devtools/font-inspector.css
deleted file mode 100644
index 2c4a365..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/font-inspector.css
+++ /dev/null
@@ -1,80 +0,0 @@
-* {
-  box-sizing: border-box;
-}
-
-body {
-  display: flex;
-  flex-direction: column;
-  height: 100%;
-  margin: 0;
-  padding-bottom: 20px;
-}
-
-#all-fonts {
-  padding: 0;
-  margin: 0;
-}
-
-#showall {
-  border-radius: 0;
-  border: 1px solid black;
-  margin: 3px;
-  cursor: pointer;
-  position: fixed;
-  bottom: 0;
-  right: 0;
-}
-
-.font {
-  padding: 10px 10px;
-}
-
-.theme-dark .font {
-  border-bottom: 1px solid #444;
-}
-
-.theme-light .font {
-  border-bottom: 1px solid #DDD;
-}
-
-.font:last-of-type {
-  border-bottom: 0;
-}
-
-.theme-light .font:nth-child(even) {
-  background: #F4F4F4;
-}
-
-.font-preview {
-  margin-left: -4px;
-  height: 60px;
-  display: block;
-}
-
-.font-info {
-  display: block;
-}
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-.font-name {
-  display: inline;
-}
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-.font-css-code {
-  max-width: 100%;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  padding: 5px;
-}
-
-.theme-light .font-css-code,
-.theme-light .font-url {
-  border: 1px solid #CCC;
-  background: white;
-}
-
-.theme-dark .font-css-code,
-.theme-dark .font-url {
-  border: 1px solid #333;
-  background: black;
-  color: white;
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/inspector.css b/arc-firefox-theme/chrome/browser/devtools/inspector.css
deleted file mode 100644
index a892ec3..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/inspector.css
+++ /dev/null
@@ -1,155 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-
-#inspector-searchbox {
-  transition-property: max-width, -moz-padding-end, -moz-padding-start;
-  transition-duration: 250ms;
-  transition-timing-function: ease;
-}
-
-#inspector-searchbox:not([focused]):not([filled]) > .textbox-input-box {
-  overflow: hidden;
-}
-
-#inspector-searchbox:not([focused]):not([filled]) {
-  max-width: 20px !important;
-  -moz-padding-end: 5px;
-  -moz-padding-start: 22px;
-  background-position: 8px center, top left, top left;
-}
-
-#inspector-searchbox[focused],
-#inspector-searchbox[filled] {
-  max-width: 200px !important;
-}
-
-/* Expand/collapse panel toolbar button */
-
-#inspector-pane-toggle {
-  background: none;
-  box-shadow: none;
-  border: none;
-  list-style-image: url(debugger-collapse.png);
-  -moz-image-region: rect(0px,16px,16px,0px);
-}
-
-#inspector-pane-toggle > .toolbarbutton-icon {
-  width: 16px;
-  height: 16px;
-}
-
-#inspector-pane-toggle[pane-collapsed] {
-  list-style-image: url(debugger-expand.png);
-}
-
-#inspector-pane-toggle:active {
-  -moz-image-region: rect(0px,32px,16px,16px);
-}
-
-@media (min-resolution: 1.1dppx) {
-  #inspector-pane-toggle {
-    list-style-image: url(debugger-collapse@2x.png);
-    -moz-image-region: rect(0px,32px,32px,0px);
-  }
-
-  #inspector-pane-toggle[pane-collapsed] {
-    list-style-image: url(debugger-expand@2x.png);
-  }
-
-  #inspector-pane-toggle:active {
-    -moz-image-region: rect(0px,64px,32px,32px);
-  }
-}
-
-/* Tooltip: Events */
-
-#devtools-tooltip-events-container {
-  margin: -4px; /* Compensate for the .panel-arrowcontent padding. */
-  max-width: 590px;
-  overflow-y: auto;
-}
-
-.event-header {
-  display: flex;
-  align-items: center;
-  cursor: pointer;
-}
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-.event-tooltip-event-type,
-.event-tooltip-filename,
-.event-tooltip-attributes {
-  -moz-margin-start: 0;
-  flex-shrink: 0;
-  cursor: pointer;
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-.event-tooltip-event-type {
-  font-weight: bold;
-  font-size: 13px;
-}
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-.event-tooltip-filename {
-  -moz-margin-end: 0;
-  font-size: 100%;
-  flex-shrink: 1;
-}
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-.event-tooltip-debugger-icon {
-  width: 16px;
-  height: 16px;
-  -moz-margin-end: 4px;
-  opacity: 0.6;
-  flex-shrink: 0;
-}
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-.event-tooltip-debugger-icon:hover {
-  opacity: 1;
-}
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-.event-tooltip-content-box {
-  display: none;
-  overflow: auto;
-  -moz-margin-end: 0;
-}
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-.event-tooltip-content-box[open] {
-  display: block;
-}
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-.event-tooltip-source-container {
-  margin-top: 5px;
-  margin-bottom: 10px;
-  -moz-margin-start: 5px;
-  -moz-margin-end: 0;
-}
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-.event-tooltip-source {
-  margin-bottom: 0;
-}
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-.event-tooltip-attributes-container {
-  display: flex;
-  flex-shrink: 0;
-  flex-grow: 1;
-  justify-content: flex-end;
-}
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-.event-tooltip-attributes-box {
-  display: flex;
-  flex-shrink: 0;
-  align-items: center;
-  border-radius: 3px;
-  padding: 2px;
-  -moz-margin-start: 5px;
-  background-color: var(--theme-body-color-alt);
-  color: var(--theme-toolbar-background);
-}
-
-.event-tooltip-attributes {
-  margin: 0;
-  font-size: 9px;
-  padding-top: 2px;
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diff --git a/arc-firefox-theme/chrome/browser/devtools/itemArrow-dark-ltr.svg b/arc-firefox-theme/chrome/browser/devtools/itemArrow-dark-ltr.svg
deleted file mode 100644
index c2accab..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/itemArrow-dark-ltr.svg
+++ /dev/null
@@ -1,7 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg width="7" xmlns="http://www.w3.org/2000/svg" height="12" viewBox="0 0 7 12">
-  <path fill="#181d20" d="M7,11.6 7,.4 1.5,6z"/>
-  <path fill="#000" d="M7,0 6,0 0,6 6,12 7,12 7,11.6 1.5,6 7,.4z"/>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/itemArrow-dark-rtl.svg b/arc-firefox-theme/chrome/browser/devtools/itemArrow-dark-rtl.svg
deleted file mode 100644
index 18d3702..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/itemArrow-dark-rtl.svg
+++ /dev/null
@@ -1,7 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public

-   - License, v. 2.0. If a copy of the MPL was not distributed with this

-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

-<svg width="7" xmlns="http://www.w3.org/2000/svg" height="12" viewBox="0 0 7 12">

-  <path fill="#181d20" d="M0,11.6 0,.4 5.5,6z"/>

-  <path fill="#000" d="M1,0 0,0 0,.4 5.5,6 0,11.6 0,12 1,12 7,6z"/>

-</svg>

diff --git a/arc-firefox-theme/chrome/browser/devtools/itemArrow-ltr.svg b/arc-firefox-theme/chrome/browser/devtools/itemArrow-ltr.svg
deleted file mode 100644
index bca667a..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/itemArrow-ltr.svg
+++ /dev/null
@@ -1,7 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg width="7" xmlns="http://www.w3.org/2000/svg" height="12" viewBox="0 0 7 12">
-  <path fill="#f7f7f7" d="M7,11.6 7,.4 1.5,6z"/>
-  <path fill="#ababab" d="M7,0 6,0 0,6 6,12 7,12 7,11.6 1.5,6 7,.4z"/>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/itemArrow-rtl.svg b/arc-firefox-theme/chrome/browser/devtools/itemArrow-rtl.svg
deleted file mode 100755
index e83fa63..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/itemArrow-rtl.svg
+++ /dev/null
@@ -1,7 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
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diff --git a/arc-firefox-theme/chrome/browser/devtools/itemToggle.png b/arc-firefox-theme/chrome/browser/devtools/itemToggle.png
deleted file mode 100644
index dc30c22..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/itemToggle.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/itemToggle@2x.png b/arc-firefox-theme/chrome/browser/devtools/itemToggle@2x.png
deleted file mode 100644
index 9042128..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/itemToggle@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/layoutview.css b/arc-firefox-theme/chrome/browser/devtools/layoutview.css
deleted file mode 100644
index 642e89c..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/layoutview.css
+++ /dev/null
@@ -1,339 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/ */
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-  /* The regions are semi-transparent, so the white background is partly
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-.size > span {
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-
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diff --git a/arc-firefox-theme/chrome/browser/devtools/light-theme.css b/arc-firefox-theme/chrome/browser/devtools/light-theme.css
deleted file mode 100644
index 276b34a..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/light-theme.css
+++ /dev/null
@@ -1,1461 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* Colors are taken from:
- * https://developer.mozilla.org/en-US/docs/Tools/DevToolsColors.
- * Changes should be kept in sync with commandline.css and commandline.inc.css.
- */
-:root {
-  --theme-body-background: #fcfcfc;
-  --theme-sidebar-background: #f7f7f7;
-  --theme-contrast-background: #e6b064;
-
-  --theme-tab-toolbar-background: #ebeced;
-  --theme-toolbar-background: #f0f1f2;
-  --theme-selection-background: #4c9ed9;
-  --theme-selection-background-semitransparent: rgba(76, 158, 217, .23);
-  --theme-selection-color: #f5f7fa;
-  --theme-splitter-color: #aaaaaa;
-  --theme-comment: #757873;
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-  --theme-body-color: #18191a;
-  --theme-body-color-alt: #585959;
-  --theme-content-color1: #292e33;
-  --theme-content-color2: #8fa1b2;
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-  --theme-highlight-green: #2cbb0f;
-  --theme-highlight-blue: #0088cc;
-  --theme-highlight-bluegrey: #0072ab;
-  --theme-highlight-purple: #5b5fff;
-  --theme-highlight-lightorange: #d97e00;
-  --theme-highlight-orange: #f13c00;
-  --theme-highlight-red: #ed2655;
-  --theme-highlight-pink: #b82ee5;
-
-  /* Colors used in Graphs, like performance tools. Similar colors to Chrome's timeline. */
-  --theme-graphs-green: #85d175;
-  --theme-graphs-blue: #83b7f6;
-  --theme-graphs-bluegrey: #0072ab;
-  --theme-graphs-purple: #b693eb;
-  --theme-graphs-yellow: #efc052;
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- */
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-div.CodeMirror div.error-line {
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-/* Highlight for a line that represents a stack frame's location. */
-div.CodeMirror div.debug-line {
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-  box-shadow:
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-    0 -1px 0 0 rgba(0,128,255,0.4);
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-  --searchbox-border-color: #ffbf00;
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diff --git a/arc-firefox-theme/chrome/browser/devtools/magnifying-glass-light.png b/arc-firefox-theme/chrome/browser/devtools/magnifying-glass-light.png
deleted file mode 100644
index e8c1841..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/magnifying-glass-light.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/magnifying-glass-light@2x.png b/arc-firefox-theme/chrome/browser/devtools/magnifying-glass-light@2x.png
deleted file mode 100644
index d784870..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/magnifying-glass-light@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/magnifying-glass.png b/arc-firefox-theme/chrome/browser/devtools/magnifying-glass.png
deleted file mode 100644
index bd09ffb..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/magnifying-glass.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/magnifying-glass@2x.png b/arc-firefox-theme/chrome/browser/devtools/magnifying-glass@2x.png
deleted file mode 100644
index 1784285..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/magnifying-glass@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/markup-view.css b/arc-firefox-theme/chrome/browser/devtools/markup-view.css
deleted file mode 100644
index fb3d958..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/markup-view.css
+++ /dev/null
@@ -1,112 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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-* {
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-.theme-selected ~ .editor .theme-fg-color2,
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-  right: 5px;
-  width: 80px;
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diff --git a/arc-firefox-theme/chrome/browser/devtools/memory.css b/arc-firefox-theme/chrome/browser/devtools/memory.css
deleted file mode 100644
index 78f8f1f..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/memory.css
+++ /dev/null
@@ -1,81 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
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diff --git a/arc-firefox-theme/chrome/browser/devtools/netmonitor.css b/arc-firefox-theme/chrome/browser/devtools/netmonitor.css
deleted file mode 100644
index d47f112..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/netmonitor.css
+++ /dev/null
@@ -1,864 +0,0 @@
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-/* This Source Code Form is subject to the terms of the Mozilla Public
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-/* 3xx are triangles */
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-/* 4xx and 5xx are squares - error codes */
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-
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-.requests-menu-timings-box.blocked {
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-/* Use custom colors for dark and light theme on remaining timing types. */
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-  }
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-  #details-pane-toggle[pane-collapsed] {
-    list-style-image: url("chrome://browser/skin/devtools/debugger-expand@2x.png");
-  }
-
-  #details-pane-toggle:active {
-    -moz-image-region: rect(0px,64px,32px,32px);
-  }
-}
-
-/* Network request details tabpanels */
-
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-}
-
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-/* Summary tabpanel */
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-.tabpanel-summary-container {
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-.tabpanel-summary-label {
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-.theme-dark .tabpanel-summary-value {
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-/* Headers tabpanel */
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-.raw-response-textarea {
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-
-/* Response tabpanel */
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-#response-content-info-header {
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-
-#response-content-image {
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-}
-
-/* Preview tabpanel */
-
-#preview-tabpanel {
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-}
-
-#response-preview {
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-  -moz-box-flex: 1;
-}
-
-/* Timings tabpanel */
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-#timings-tabpanel .tabpanel-summary-label {
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-
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-}
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-/* Security tabpanel */
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-}
-
-.theme-dark #security-error-message {
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-}
-
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-
-.security-warning-icon {
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-  background-size: 13px 12px;
-  -moz-margin-start: 5px;
-  vertical-align: top;
-  width: 13px;
-  height: 12px;
-}
-
-@media (min-resolution: 1.1dppx) {
-  .security-warning-icon {
-    background-image: url(alerticon-warning@2x.png);
-  }
-}
-
-/* Custom request form */
-
-#custom-pane {
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-
-.custom-header {
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-
-.custom-section {
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-}
-
-#custom-method-value {
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-}
-
-/* Footer */
-
-#requests-menu-footer {
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-
-.requests-menu-footer-button,
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-.theme-dark .requests-menu-footer-label {
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-
-.requests-menu-footer-spacer {
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-.theme-dark .requests-menu-footer-spacer:not(:first-child),
-.theme-dark .requests-menu-footer-button:not(:first-child) {
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-
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-.requests-menu-footer-button:hover:active {
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-}
-
-#requests-menu-filter-freetext-text[focused],
-#requests-menu-filter-freetext-text[filled] {
-  max-width: 200px !important;
-}
-
-/* Performance analysis buttons */
-
-#requests-menu-network-summary-button {
-  background: none;
-  box-shadow: none;
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-
-/* Performance analysis view */
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-#network-statistics-toolbar {
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-  -moz-margin-end: 1vw;
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-  -moz-margin-end: 3vw;
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-
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-}
-
-/* Responsive sidebar */
-@media (max-width: 700px) {
-  #requests-menu-toolbar {
-    height: 22px;
-  }
-
-  .requests-menu-header-button {
-    min-height: 20px;
-  }
-
-  #details-pane {
-    margin: 0 !important;
-    /* To prevent all the margin hacks to hide the sidebar. */
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-
-  .requests-menu-status-and-method {
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-  }
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-  .requests-menu-icon-and-file {
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-  .requests-menu-size {
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-    border-width: 0 !important;
-    box-shadow: none !important;
-    /* The "Timeline" header is not visible anymore, and thus the
-       right border and box-shadow of "Size" column should be hidden. */
-  }
-}
-
-/* Platform overrides (copied in from the old platform specific files) */
-#headers-summary-resend {
-  padding: 4px;
-}
-
-#toggle-raw-headers {
-  padding: 4px;
-}
-
-.requests-menu-status-and-method {
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-
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-}
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-}
-
-/* Responsive sidebar */
-@media (max-width: 700px) {
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-    font-size: 85%;
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-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/newtab-inverted.png b/arc-firefox-theme/chrome/browser/devtools/newtab-inverted.png
deleted file mode 100644
index 2d29c2c..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/newtab-inverted.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/newtab-inverted@2x.png b/arc-firefox-theme/chrome/browser/devtools/newtab-inverted@2x.png
deleted file mode 100644
index 6feba0e..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/newtab-inverted@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/newtab.png b/arc-firefox-theme/chrome/browser/devtools/newtab.png
deleted file mode 100644
index 32e42b0..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/newtab.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/newtab@2x.png b/arc-firefox-theme/chrome/browser/devtools/newtab@2x.png
deleted file mode 100644
index ffde5f0..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/newtab@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/noise.png b/arc-firefox-theme/chrome/browser/devtools/noise.png
deleted file mode 100644
index 01d340a..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/noise.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/devtools/performance-icons.svg b/arc-firefox-theme/chrome/browser/devtools/performance-icons.svg
deleted file mode 100644
index a115938..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/performance-icons.svg
+++ /dev/null
@@ -1,45 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public

-   - License, v. 2.0. If a copy of the MPL was not distributed with this

-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

-<svg xmlns="http://www.w3.org/2000/svg" width="16px" height="16px">

-  <style>

-    g {

-      fill: #babec3;

-    }

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-      display: none;

-    }

-  </style>

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-    <rect x="0px" y="3px" width="5px" height="2.5px" rx="1" ry="1"/>

-    <rect x="7px" y="3px" width="9px" height="2.5px" rx="1" ry="1"/>

-    <rect x="0px" y="7px" width="9px" height="2.5px" rx="1" ry="1"/>

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-    <rect x="4px" y="11px" width="5px" height="2.5px" rx="1" ry="1"/>

-    <rect x="12px" y="11px" width="4px" height="2.5px" rx="1" ry="1"/>

-  </g>

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-    <rect x="13px" y="7px" width="2px" height="9px" rx="1" ry="1"/>

-  </g>

-  <g id="details-waterfall">

-    <rect x="0px" y="3px" width="9px" height="2.5px" rx="1" ry="1"/>

-    <rect x="5px" y="7px" width="8px" height="2.5px" rx="1" ry="1"/>

-    <rect x="7px" y="11px" width="9px" height="2.5px" rx="1" ry="1"/>

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-    <rect x="0px" y="6px" width="8px" height="2px" rx="1" ry="1"/>

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-  </g>

-</svg>

diff --git a/arc-firefox-theme/chrome/browser/devtools/performance.css b/arc-firefox-theme/chrome/browser/devtools/performance.css
deleted file mode 100644
index 4279a16..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/performance.css
+++ /dev/null
@@ -1,758 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* CSS Variables specific to this panel that aren't defined by the themes */
-.theme-dark {
-  --cell-border-color: rgba(255,255,255,0.15);
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diff --git a/arc-firefox-theme/chrome/browser/devtools/power.svg b/arc-firefox-theme/chrome/browser/devtools/power.svg
deleted file mode 100644
index d3a3284..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/power.svg
+++ /dev/null
@@ -1,14 +0,0 @@
-<!--
-Logo from raphaeljs.com, MIT License
-
-Copyright © 2008 Dmitry Baranovskiy
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-The software is provided “as is”, without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.
--->
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diff --git a/arc-firefox-theme/chrome/browser/devtools/profiler-stopwatch-checked.svg b/arc-firefox-theme/chrome/browser/devtools/profiler-stopwatch-checked.svg
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index abe68dc..0000000
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+++ /dev/null
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diff --git a/arc-firefox-theme/chrome/browser/devtools/promisedebugger.css b/arc-firefox-theme/chrome/browser/devtools/promisedebugger.css
deleted file mode 100644
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deleted file mode 100644
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diff --git a/arc-firefox-theme/chrome/browser/devtools/responsive-horizontal-resizer@2x.png b/arc-firefox-theme/chrome/browser/devtools/responsive-horizontal-resizer@2x.png
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-  background-image: url(alerticon-warning.png);
-  background-size: 13px 12px;
-  -moz-margin-start: 5px;
-  display: inline-block;
-  width: 13px;
-  height: 12px;
-}
-
-@media (min-resolution: 1.1dppx) {
-  .ruleview-warning {
-    background-image: url(alerticon-warning@2x.png);
-  }
-}
-
-.ruleview-overridden-rule-filter {
-  background-image: var(--rule-filter-icon);
-  background-size: 11px 11px;
-  -moz-margin-start: 5px;
-  display: inline-block;
-  width: 11px;
-  height: 11px;
-}
-
-.ruleview-ruleopen {
-  -moz-padding-end: 5px;
-}
-
-.ruleview-ruleclose {
-  cursor: text;
-  padding-right: 20px;
-}
-
-.ruleview-propertylist {
-  list-style: none;
-  padding: 0;
-  margin: 0;
-}
-
-.ruleview-rule:not(:hover) .ruleview-enableproperty {
-  visibility: hidden;
-}
-
-.ruleview-expander {
-  display: inline-block;
-}
-
-.ruleview-newproperty {
-  /* (enable checkbox width: 12px) + (expander width: 15px) */
-  -moz-margin-start: 27px;
-}
-
-.ruleview-namecontainer,
-.ruleview-propertyvaluecontainer,
-.ruleview-propertyname,
-.ruleview-propertyvalue {
-  text-decoration: inherit;
-}
-
-.ruleview-computedlist {
-  list-style: none;
-  padding: 0;
-}
-
-.ruleview-computed {
-  -moz-margin-start: 35px;
-}
-
-.ruleview-swatch {
-  cursor: pointer;
-  border-radius: 50%;
-  width: 0.9em;
-  height: 0.9em;
-  vertical-align: middle;
-  -moz-margin-end: 5px;
-  display: inline-block;
-  position: relative;
-}
-
-.ruleview-colorswatch::before {
-  content: '';
-  background-color: #eee;
-  background-image: linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%, #ccc),
-                    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%, #ccc);
-  background-size: 12px 12px;
-  background-position: 0 0, 6px 6px;
-  position: absolute;
-  border-radius: 50%;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  z-index: -1;
-}
-
-.ruleview-bezierswatch {
-  background: url("chrome://browser/skin/devtools/cubic-bezier-swatch.png");
-  background-size: 1em;
-}
-
-.ruleview-filterswatch {
-  background: url("chrome://browser/skin/devtools/filter-swatch.svg");
-  background-size: 1em;
-}
-
-@media (min-resolution: 1.1dppx) {
-  .ruleview-bezierswatch {
-    background: url("chrome://browser/skin/devtools/cubic-bezier-swatch@2x.png");
-    background-size: 1em;
-  }
-}
-
-.ruleview-overridden {
-  text-decoration: line-through;
-}
-
-.theme-light .ruleview-overridden {
-  text-decoration-color: var(--theme-content-color3);
-}
-
-.styleinspector-propertyeditor {
-  border: 1px solid #CCC;
-  padding: 0;
-}
-
-.ruleview-property {
-  border-left: 3px solid transparent;
-  clear: right;
-}
-
-.ruleview-propertycontainer  > * {
-  vertical-align: middle;
-}
-
-.ruleview-property[dirty] {
-  border-left-color: var(--theme-highlight-green);
-}
-
-.ruleview-highlight {
-  background-color: var(--rule-highlight-background-color);
-}
-
-.ruleview-namecontainer > .ruleview-propertyname,
-.ruleview-propertyvaluecontainer > .ruleview-propertyvalue {
-  border-bottom: 1px dashed transparent;
-}
-
-.ruleview-namecontainer:hover > .ruleview-propertyname,
-.ruleview-propertyvaluecontainer:hover > .ruleview-propertyvalue {
-  border-bottom-color: hsl(0,0%,50%);
-}
-
-.ruleview-selectorcontainer {
-  word-wrap: break-word;
-  cursor: text;
-}
-
-.ruleview-selector-separator, .ruleview-selector-unmatched {
-  color: #888;
-}
-
-.ruleview-selector-matched > .ruleview-selector-attribute {
-  /* TODO: Bug 1178535 Awaiting UX feedback on highlight colors */
-}
-
-.ruleview-selector-matched > .ruleview-selector-pseudo-class {
-  /* TODO: Bug 1178535 Awaiting UX feedback on highlight colors */
-}
-
-.ruleview-selector-matched > .ruleview-selector-pseudo-class-lock {
-  font-weight: bold;
-  color: var(--theme-highlight-orange);
-}
-
-.ruleview-selectorhighlighter {
-  background: url("chrome://browser/skin/devtools/vview-open-inspector.png") no-repeat 0 0;
-  padding-left: 16px;
-  margin-left: 5px;
-  cursor: pointer;
-}
-
-.ruleview-selectorhighlighter:hover {
-  background-position: -32px 0;
-}
-
-.ruleview-selectorhighlighter:active,
-.ruleview-selectorhighlighter.highlighted {
-  background-position: -16px 0;
-}
-
-#ruleview-add-rule-button::before {
-  background-image: url("chrome://browser/skin/devtools/add.svg");
-  background-size: cover;
-}
-
-#pseudo-class-panel-toggle::before {
-  background-image: url("chrome://browser/skin/devtools/pseudo-class.svg#pseudo-class");
-  background-size: cover;
-}
-#pseudo-class-panel-toggle[checked]::before {
-  background-image: url("chrome://browser/skin/devtools/pseudo-class.svg#pseudo-class-checked");
-  filter: none !important;
-}
-
-/**
- * These buttons are using opacity instead of background color to indicate
- * the state
- */
-#ruleview-add-rule-button,
-#pseudo-class-panel-toggle,
-.ruleview-overridden-rule-filter {
-  opacity: 0.8;
-}
-
-#ruleview-add-rule-button:not([disabled]):hover,
-#pseudo-class-panel-toggle:hover,
-#pseudo-class-panel-toggle[checked],
-.ruleview-overridden-rule-filter:hover {
-  opacity: 1;
-}
-
-#ruleview-add-rule-button,
-#pseudo-class-panel-toggle,
-#pseudo-class-panel-toggle:hover,
-#pseudo-class-panel-toggle[checked]::before {
-  background-color: transparent !important;
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/scratchpad.css b/arc-firefox-theme/chrome/browser/devtools/scratchpad.css
deleted file mode 100644
index 4c8a5d1..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/scratchpad.css
+++ /dev/null
@@ -1,9 +0,0 @@
-
-#scratchpad-sidebar > tabs {
-  height: 0;
-  border: none;
-}
-
-#sp-toolbar {
-  border: none;
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/search-clear-dark.svg b/arc-firefox-theme/chrome/browser/devtools/search-clear-dark.svg
deleted file mode 100644
index 422a7ce..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/search-clear-dark.svg
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="32" height="16" viewBox="0 0 32 16">
-  <defs>
-    <path id="glyphShape-clear" d="M8,0C3.6,0,0,3.6,0,8c0,4.4,3.6,8,8,8s8-3.6,8-8C16,3.6,12.4,0,8,0 z M11.9,10.5l-1.4,1.4L8,9.4l-2.4,2.4l-1.4-1.4L6.6,8L4.2,5.6l1.4-1.4L8,6.6l2.4-2.4l1.4,1.4L9.4,8L11.9,10.5z"/>
-    <style>
-      .icon-state-default { fill: #f5f7fa; fill-opacity: .6; }
-      .icon-state-pressed { fill: #7d7e80; fill-opacity: .8; }
-    </style>
-  </defs>
-  <use xlink:href="#glyphShape-clear" class="icon-state-default"/>
-  <use xlink:href="#glyphShape-clear" class="icon-state-pressed" transform="translate(16)"/>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/search-clear-failed.svg b/arc-firefox-theme/chrome/browser/devtools/search-clear-failed.svg
deleted file mode 100644
index a8f9fd8..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/search-clear-failed.svg
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="32" height="16" viewBox="0 0 32 16">
-  <defs>
-    <path id="glyphShape-clear" d="M8,0C3.6,0,0,3.6,0,8c0,4.4,3.6,8,8,8s8-3.6,8-8C16,3.6,12.4,0,8,0 z M11.9,10.5l-1.4,1.4L8,9.4l-2.4,2.4l-1.4-1.4L6.6,8L4.2,5.6l1.4-1.4L8,6.6l2.4-2.4l1.4,1.4L9.4,8L11.9,10.5z"/>
-    <style>
-      .icon-state-default { fill: #cc3d3d; fill-opacity: 1; }
-      .icon-state-pressed { fill: #802d2d; fill-opacity: 1; }
-    </style>
-  </defs>
-  <use xlink:href="#glyphShape-clear" class="icon-state-default"/>
-  <use xlink:href="#glyphShape-clear" class="icon-state-pressed" transform="translate(16)"/>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/search-clear-light.svg b/arc-firefox-theme/chrome/browser/devtools/search-clear-light.svg
deleted file mode 100644
index 066ef44..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/search-clear-light.svg
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="32" height="16" viewBox="0 0 32 16">
-  <defs>
-    <path id="glyphShape-clear" d="M8,0C3.6,0,0,3.6,0,8c0,4.4,3.6,8,8,8s8-3.6,8-8C16,3.6,12.4,0,8,0 z M11.9,10.5l-1.4,1.4L8,9.4l-2.4,2.4l-1.4-1.4L6.6,8L4.2,5.6l1.4-1.4L8,6.6l2.4-2.4l1.4,1.4L9.4,8L11.9,10.5z"/>
-    <style>
-      .icon-state-default { fill: #1d2126; fill-opacity: .5; }
-      .icon-state-pressed { fill: #1d2126; fill-opacity: .8; }
-    </style>
-  </defs>
-  <use xlink:href="#glyphShape-clear" class="icon-state-default"/>
-  <use xlink:href="#glyphShape-clear" class="icon-state-pressed" transform="translate(16)"/>
-</svg>
diff --git a/arc-firefox-theme/chrome/browser/devtools/shadereditor.css b/arc-firefox-theme/chrome/browser/devtools/shadereditor.css
deleted file mode 100644
index 4626a38..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/shadereditor.css
+++ /dev/null
@@ -1,119 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* Reload and waiting notices */
-
-.notice-container {
-  margin-top: -50vh;
-  background-color: var(--theme-toolbar-background);
-  color: var(--theme-body-color-alt);
-}
-
-#reload-notice {
-  font-size: 120%;
-}
-
-#waiting-notice {
-  font-size: 110%;
-}
-
-/* Shaders pane */
-
-#shaders-pane {
-  min-width: 150px;
-}
-
-#shaders-pane + .devtools-side-splitter {
-  border-color: transparent;
-}
-
-.program-item {
-  padding: 2px 0px;
-}
-
-.side-menu-widget-item-checkbox {
-  -moz-appearance: none;
-  opacity: 0;
-  transition: opacity .15s ease-out 0s;
-}
-
-/* Only show the checkbox when the source is hovered over, is selected, or if it
- * is not checked. */
-.side-menu-widget-item:hover > .side-menu-widget-item-checkbox,
-.side-menu-widget-item.selected > .side-menu-widget-item-checkbox,
-.side-menu-widget-item-checkbox:not([checked]) {
-  opacity: 1;
-  transition: opacity .15s ease-out 0s;
-}
-
-.side-menu-widget-item-checkbox .checkbox-check {
-  -moz-appearance: none;
-  background-image: url(itemToggle.png);
-  background-color: transparent;
-  background-repeat: no-repeat;
-  background-clip: content-box;
-  background-size: 32px 16px;
-  background-position: -16px 0;
-  width: 16px;
-  height: 16px;
-  border: 0;
-}
-
-@media (min-resolution: 1.1dppx) {
-  .side-menu-widget-item-checkbox .checkbox-check {
-    background-image: url(itemToggle@2x.png);
-  }
-}
-
-.side-menu-widget-item-checkbox[checked] .checkbox-check {
-  background-position: 0 0;
-}
-
-/* Invert all toggle icons but the one in the active row for light theme */
-.theme-light .side-menu-widget-item:not(.selected) .checkbox-check {
-  filter: url(filters.svg#invert);
-}
-
-/* Shader source editors */
-
-.editor-label {
-  padding: 1px 12px;
-  border-top: 1px solid;
-}
-
-.editor-label {
-  background: var(--theme-toolbar-background);
-  border-color: var(--theme-splitter-color);
-  color: var(--theme-body-color-alt);
-}
-
-.editor-label[selected] {
-  background-color: var(--theme-selection-background);
-  color: var(--theme-selection-color);
-}
-
-/* Responsive sidebar */
-
-@media (max-width: 700px) {
-  #shaders-pane {
-    max-height: 60vh;
-  }
-
-  #editors-splitter {
-    border-color: transparent;
-  }
-
-  .side-menu-widget-container {
-    box-shadow: none !important;
-  }
-
-  .side-menu-widget-item-arrow {
-    background-image: none !important;
-  }
-
-  .editor-label {
-    -moz-box-ordinal-group: 0;
-    border-bottom: 1px solid;
-  }
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/splitview.css b/arc-firefox-theme/chrome/browser/devtools/splitview.css
deleted file mode 100644
index 902fedb..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/splitview.css
+++ /dev/null
@@ -1,135 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-
-.splitview-nav-container .devtools-throbber {
-  display: none;
-  text-align: center;
-}
-
-.loading .splitview-nav-container .devtools-throbber {
-  display: block;
-}
-
-.theme-dark .splitview-nav-container {
-  background-color: var(--theme-toolbar-background);
-}
-
-.splitview-nav {
-  -moz-appearance: none;
-  list-style-image: none;
-  list-style: none;
-  padding: 0;
-  margin: 0;
-}
-
-.theme-dark .splitview-nav {
-  box-shadow: inset -1px 0 0 #000;
-}
-
-.theme-dark .splitview-nav:-moz-locale-dir(rtl) {
-  box-shadow: inset 1px 0 0 #000;
-}
-
-.theme-light .splitview-nav {
-  box-shadow: inset -1px 0 0 #aaa;
-}
-
-.theme-light .splitview-nav:-moz-locale-dir(rtl) {
-  box-shadow: inset 1px 0 0 #aaa;
-}
-
-.splitview-nav > li {
-  /* To compensate for the top and bottom borders */
-  margin-top: -1px;
-  margin-bottom: -1px;
-  -moz-padding-end: 8px;
-  -moz-box-align: center;
-  outline: 0;
-  vertical-align: bottom;
-}
-
-.theme-dark .splitview-nav > li {
-  border-top: 1px solid rgba(0,0,0,0.2);
-  border-bottom: 1px solid rgba(128,128,128,0.15);
-}
-
-.theme-dark .splitview-nav > li:last-of-type {
-  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.2);
-}
-
-.theme-light  .splitview-nav > li {
-  border-top: 1px solid rgba(128,128,128,0.15);
-  border-bottom: 1px solid transparent;
-}
-
-.theme-light .splitview-nav > li:last-of-type {
-  box-shadow: inset 0 -1px 0 rgba(128,128,128,0.15);
-}
-
-.placeholder {
-  -moz-box-flex: 1;
-  text-align: center;
-}
-
-.splitview-nav > li.splitview-active {
-  background-repeat: no-repeat, no-repeat, repeat-x;
-  background-position: center right, center right, top left;
-  background-size: auto, 1px, auto;
-}
-
-.splitview-nav > li.splitview-active:-moz-locale-dir(rtl) {
-  background-repeat: no-repeat, no-repeat, repeat-x;
-  background-position: center left, center left, top right;
-}
-
-.theme-dark .splitview-nav > li.splitview-active {
-  background-image: url(itemArrow-dark-ltr.svg),
-                    linear-gradient(#000, #000),
-                    linear-gradient(#1d4f73, #1d4f73);
-}
-
-.theme-dark .splitview-nav > li.splitview-active:-moz-locale-dir(rtl) {
-  background-image: url(itemArrow-dark-rtl.svg),
-                    linear-gradient(#000, #000),
-                    linear-gradient(#1d4f73, #1d4f73);
-}
-
-.theme-light .splitview-nav > li.splitview-active {
-  background-image: url(itemArrow-ltr.svg),
-                    linear-gradient(#aaa, #aaa),
-                    linear-gradient(#4c9ed9, #4c9ed9);
-}
-
-.theme-light .splitview-nav > li.splitview-active:-moz-locale-dir(rtl) {
-  background-image: url(itemArrow-rtl.svg),
-                    linear-gradient(#aaa, #aaa),
-                    linear-gradient(#4c9ed9, #4c9ed9);
-}
-
-/* Toolbars */
-
-.splitview-main > .devtools-toolbar {
-  background-origin: border-box;
-  background-clip: border-box;
-}
-
-.theme-dark .splitview-main > toolbar,
-.theme-dark .loading .splitview-nav-container {
-  -moz-border-end: 1px solid #000;
-}
-
-.theme-light .splitview-main > toolbar,
-.theme-light .loading .splitview-nav-container {
-  -moz-border-end: 1px solid #aaa;
-}
-
-.splitview-main > .devtools-toolbarbutton {
-  font-size: 11px;
-  padding: 0 8px;
-  width: auto;
-  min-width: 48px;
-  min-height: 0;
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/storage.css b/arc-firefox-theme/chrome/browser/devtools/storage.css
deleted file mode 100644
index a5a897e..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/storage.css
+++ /dev/null
@@ -1,48 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* Storage Host Tree */
-
-#storage-tree {
-  min-width: 220px;
-  max-width: 500px;
-  overflow: auto;
-}
-
-#storage-tree {
-  background: var(--theme-sidebar-background);
-}
-
-#storage-tree .tree-widget-item[type="store"]:after {
-  background-image: url(chrome://browser/skin/devtools/filetype-store.svg);
-  background-size: 18px 18px;
-  background-position: -1px 0;
-}
-
-/* Columns with date should have a min width so that date is visible */
-#expires, #lastAccessed, #creationTime {
-  min-width: 150px;
-}
-
-/* Variables View Sidebar */
-
-#storage-sidebar {
-  max-width: 500px;
-  min-width: 250px;
-}
-
-/* Responsive sidebar */
-@media (max-width: 700px) {
-  #storage-tree {
-    max-width: 100%;
-  }
-
-  #storage-table #path {
-    display: none;
-  }
-
-  #storage-table .table-widget-cell {
-    min-width: 100px;
-  }
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/styleeditor.css b/arc-firefox-theme/chrome/browser/devtools/styleeditor.css
deleted file mode 100644
index 0cc2fca..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/styleeditor.css
+++ /dev/null
@@ -1,305 +0,0 @@
-/* vim:set ts=2 sw=2 sts=2 et: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-.stylesheet-title,
-.stylesheet-name {
-  text-decoration: none;
-}
-
-.stylesheet-name {
-  font-size: 13px;
-}
-
-.theme-dark .stylesheet-title,
-.theme-dark .stylesheet-name {
-  color: var(--theme-selection-color);
-}
-
-.theme-dark .stylesheet-rule-count,
-.theme-dark .stylesheet-linked-file,
-.theme-dark .stylesheet-saveButton {
-  color: var(--theme-body-color-alt);
-}
-
-.theme-light .stylesheet-title,
-.theme-light .stylesheet-name {
-  color: var(--theme-body-color-alt);
-}
-
-.theme-light .stylesheet-rule-count,
-.theme-light .stylesheet-linked-file,
-.theme-light .stylesheet-saveButton {
-  color: var(--theme-body-color);
-}
-
-.stylesheet-saveButton {
-  text-decoration: underline;
-  cursor: pointer;
-}
-
-.splitview-active .stylesheet-title,
-.splitview-active .stylesheet-name,
-.theme-light .splitview-active .stylesheet-rule-count,
-.theme-light .splitview-active .stylesheet-linked-file,
-.theme-light .splitview-active .stylesheet-saveButton {
-  color: var(--theme-selection-color);
-}
-
-.splitview-nav:focus {
-  outline: 0; /* focus ring is on the stylesheet name */
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-}
-
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- * Inspector toolbar
- */
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-  list-style-image: url(power.svg);
-}
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-}
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-}
-.theme-light #audio-node-toolbar toolbarbutton[checked] {
-  background-color: #4c9ed9; /* Select Highlight Blue */
-}
-
-/* don't invert checked buttons so we can have white icons on light theme */
-#audio-node-toolbar toolbarbutton[checked] > .toolbarbutton-icon {
-  filter: none;
-}
-
-
-/**
- * Responsive Styles
- * `.devtools-responsive-container` takes care of most of
- * the changing of host types.
- */
-@media (max-width: 700px) {
-  /**
-   * Override the inspector toggle so it's always open
-   * in the portrait view, with the toggle button hidden.
-   */
-  #inspector-pane-toggle {
-    display: none;
-  }
-
-  #web-audio-inspector {
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-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/webconsole.css b/arc-firefox-theme/chrome/browser/devtools/webconsole.css
deleted file mode 100644
index d17690e..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/webconsole.css
+++ /dev/null
@@ -1,598 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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-/* General output styles */
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-a {
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-  -moz-user-input: enabled;
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- * assertion when loading HTML page with links in XUL iframe */
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-  content: "";
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-  margin: 3px;
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-  display: flex;
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-.jsterm-input-container {
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-#output-container.hideTimestamps > .message {
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-  -moz-margin-start: 7px;
-  width: calc(100% - 7px);
-}
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-#output-container.hideTimestamps > .message > .timestamp {
-  display: none;
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-#output-container.hideTimestamps > .message > .indent {
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-  width: 8px;
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-}
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-/* Network styles */
-.webconsole-filter-button[category="net"] > .toolbarbutton-menubutton-button:before {
-  background-image: linear-gradient(#444444, #000000);
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-  background-color: rgba(235, 83, 104, 0.17);
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-
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-
-.theme-selected .console-string,
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-.theme-selected .cm-variable,
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-}
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-
-.message[category=network] .method {
-  flex: none;
-}
-
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-  white-space: nowrap;
-  overflow: hidden;
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-.message[category=network].mixed-content .url {
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-.message .learn-more-link {
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-}
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-.message[category=network] .xhr {
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-}
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-/* CSS styles */
-.webconsole-filter-button[category="css"] > .toolbarbutton-menubutton-button:before {
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-}
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-.message[category=cssparser] > .indent {
-  -moz-border-end: solid #00b6f0 6px;
-}
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-.message[category=cssparser][severity=error] > .icon::before {
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-}
-
-.message[category=cssparser][severity=warn] > .icon::before {
-  background-position: -24px -12px;
-}
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-/* JS styles */
-.webconsole-filter-button[category="js"] > .toolbarbutton-menubutton-button:before {
-  background-image: linear-gradient(#FCB142, #FB9500);
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-
-.message[category=exception] > .indent {
-  -moz-border-end: solid #fb9500 6px;
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-
-.message[category=exception][severity=error] > .icon::before {
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-}
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-.message[category=exception][severity=warn] > .icon::before {
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-/* Web Developer styles */
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-
-.message[category=console] > .indent {
-  -moz-border-end: solid #cbcbcb 6px;
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-
-.message[category=console][severity=error] > .icon::before,
-.message[category=output][severity=error] > .icon::before,
-.message[category=server][severity=error] > .icon::before {
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-.message[category=console][severity=warn] > .icon::before,
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-.message[category=console][severity=info] > .icon::before,
-.message[category=server][severity=info] > .icon::before {
-  background-position: -36px -36px;
-}
-
-/* Server Logging Styles */
-
-.webconsole-filter-button[category="server"] > .toolbarbutton-menubutton-button:before {
-  background-image: linear-gradient(rgb(144, 176, 144), rgb(99, 151, 99));
-  border-color: rgb(76, 143, 76);
-}
-
-.message[category=server] > .indent {
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-}
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-/* Input and output styles */
-.message[category=input] > .indent,
-.message[category=output] > .indent {
-  -moz-border-end: solid #808080 6px;
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-}
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-@media (min-resolution: 1.1dppx) {
-  .jsterm-input-node {
-    background-image: -moz-image-rect(url('chrome://browser/skin/devtools/commandline-icon@2x.png'), 0, 64, 32, 32);
-  }
-}
-
-:-moz-any(.jsterm-input-node,
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-}
-
-.webconsole-filter-button[category="security"] > .toolbarbutton-menubutton-button:before {
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-     than off-white */
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-    display: none;
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-  }
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-  .hud-console-filter-toolbar .hud-filter-box,
-  .hud-console-filter-toolbar .devtools-toolbarbutton {
-    margin-top: 5px;
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-}
-
diff --git a/arc-firefox-theme/chrome/browser/devtools/webconsole.svg b/arc-firefox-theme/chrome/browser/devtools/webconsole.svg
deleted file mode 100644
index 6c21e54..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/webconsole.svg
+++ /dev/null
@@ -1,101 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="72" height="60" viewBox="0 0 72 60">
-  <defs>
-    <rect id="glyphShape-colorSwatch" width="8" height="8" ry="2" rx="2"/>
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-      }
-      .icon-colorSwatch-security {
-        fill: #ec1e0d;
-      }
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-      }
-
-      #icon-indicator-input {
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-      #light-icons:target #icon-indicator-input {
-        fill: #45494d;
-      }
-      #light-icons:target #icon-indicator-output {
-        fill: #8a9199;
-      }
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-    <use xlink:href="#glyphShape-colorSwatch-border" class="icon-colorSwatch-border" x="1" y="1"/>
-    <use xlink:href="#glyphShape-colorSwatch" class="icon-colorSwatch-network" x="2" y="2"/>
-  </g>
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-    <use xlink:href="#glyphShape-colorSwatch-border" class="icon-colorSwatch-border" x="1" y="1"/>
-    <use xlink:href="#glyphShape-colorSwatch" class="icon-colorSwatch-css" x="2" y="2"/>
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-  <g id="icon-colorSwatch-js" transform="translate(0 24)">
-    <use xlink:href="#glyphShape-colorSwatch-border" class="icon-colorSwatch-border" x="1" y="1"/>
-    <use xlink:href="#glyphShape-colorSwatch" class="icon-colorSwatch-js" x="2" y="2"/>
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-    <use xlink:href="#glyphShape-colorSwatch-border" class="icon-colorSwatch-border" x="1" y="1"/>
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\ No newline at end of file
diff --git a/arc-firefox-theme/chrome/browser/devtools/widgets.css b/arc-firefox-theme/chrome/browser/devtools/widgets.css
deleted file mode 100644
index a23f0f5..0000000
--- a/arc-firefox-theme/chrome/browser/devtools/widgets.css
+++ /dev/null
@@ -1,1590 +0,0 @@
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-.tree-widget-item[type]::after {
-  content: "";
-  float: left;
-  width: 16px;
-  height: 17px;
-  -moz-margin-end: 4px;
-  background-repeat: no-repeat;
-  background-size: 20px auto;
-  background-position: 0 0;
-  background-size: auto 20px;
-  opacity: 0.75;
-}
-
-.tree-widget-item.theme-selected[type]::after {
-  opacity: 1;
-}
-
-.tree-widget-item:-moz-locale-dir(rtl)::after {
-  float: right;
-}
-
-.theme-light .tree-widget-item.theme-selected[type]::after,
-.theme-dark .tree-widget-item[type]::after {
-  filter: invert(1);
-}
-
-.tree-widget-item[type="dir"]::after {
-  background-image: url(chrome://browser/skin/devtools/filetype-dir-close.svg);
-  background-position: 2px 0;
-  background-size: auto 16px;
-  width: 20px;
-}
-
-.tree-widget-item[type="dir"][expanded]:not([empty])::after {
-  background-image: url(chrome://browser/skin/devtools/filetype-dir-open.svg);
-}
-
-.tree-widget-item[type="url"]::after {
-  background-image: url(chrome://browser/skin/devtools/filetype-globe.svg);
-  background-size: auto 18px;
-  width: 18px;
-}
-
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* Manifest Editor overrides */
-
-.variables-view-container.manifest-editor {
-  background-color: #F5F5F5;
-  padding: 20px 2px;
-}
-
-.manifest-editor .variable-or-property:focus > .title {
-  background-color: #EDEDED;
-  color: #000;
-  border-radius: 4px;
-}
-
-.manifest-editor .variables-view-property > .title > .name {
-  color: #27406A;
-}
-
-.manifest-editor .variable-or-property > .title > label,
-.manifest-editor textbox  {
-  font-family: monospace;
-}
-
-.manifest-editor .variable-or-property > .title > .token-string {
-  color: #54BC6A;
-  font-weight: bold;
-}
-
-.manifest-editor .variable-or-property > .title > .token-boolean,
-.manifest-editor .variable-or-property > .title > .token-number {
-  color: #009BD4;
-  font-weight: bold;
-}
-
-.manifest-editor .variable-or-property > .title > .token-undefined {
-  color: #bbb;
-}
-
-.manifest-editor .variable-or-property > .title > .token-null {
-  color: #999;
-}
-
-.manifest-editor .variable-or-property > .title > .token-other {
-  color: #333;
-}
-
-.manifest-editor .variables-view-variable {
-  border-bottom: none;
-}
-
-.manifest-editor .variables-view-delete,
-.manifest-editor .variables-view-delete:hover,
-.manifest-editor .variables-view-delete:active,
-.manifest-editor .variable-or-property:focus .variables-view-delete,
-.manifest-editor .variables-view-add-property,
-.manifest-editor .variables-view-add-property:hover,
-.manifest-editor .variables-view-add-property:active,
-.manifest-editor .variable-or-property:focus .variables-view-add-property {
-  list-style-image: none;
-  -moz-image-region: initial;
-}
-
-.manifest-editor .variables-view-delete::before,
-.manifest-editor .variables-view-add-property::before {
-  width: 11px;
-  height: 11px;
-  content: "";
-  display: inline-block;
-  background-size: 11px auto;
-}
-
-.manifest-editor .variables-view-delete::before {
-  background-image: url("app-manager/remove.svg");
-}
-
-.manifest-editor .variables-view-add-property::before {
-  background-image: url("app-manager/add.svg");
-  -moz-margin-end: 2px;
-}
diff --git a/arc-firefox-theme/chrome/browser/magnifier.png b/arc-firefox-theme/chrome/browser/magnifier.png
deleted file mode 100644
index bcce4ad..0000000
--- a/arc-firefox-theme/chrome/browser/magnifier.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/magnifier@2x.png b/arc-firefox-theme/chrome/browser/magnifier@2x.png
deleted file mode 100644
index 6aef26a..0000000
--- a/arc-firefox-theme/chrome/browser/magnifier@2x.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/newtab/newTab.css b/arc-firefox-theme/chrome/browser/newtab/newTab.css
index 16a21d3..4cab8c4 100644
--- a/arc-firefox-theme/chrome/browser/newtab/newTab.css
+++ b/arc-firefox-theme/chrome/browser/newtab/newTab.css
@@ -134,6 +134,12 @@
   overflow: hidden;
 }
 
+/***
+ * If you change the sizes here, change them in newTab.css
+ * and the preference values:
+ * toolkit.pageThumbs.minWidth
+ * toolkit.pageThumbs.minHeight
+ */
 /* THUMBNAILS */
 .newtab-thumbnail {
   background-origin: padding-box;
diff --git a/arc-firefox-theme/chrome/browser/notification-16.png b/arc-firefox-theme/chrome/browser/notification-16.png
deleted file mode 100644
index 6b2df73..0000000
--- a/arc-firefox-theme/chrome/browser/notification-16.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/notification-64.png b/arc-firefox-theme/chrome/browser/notification-64.png
deleted file mode 100644
index a01d0ab..0000000
--- a/arc-firefox-theme/chrome/browser/notification-64.png
+++ /dev/null
diff --git a/arc-firefox-theme/chrome/browser/preferences/aboutPermissions.css b/arc-firefox-theme/chrome/browser/preferences/aboutPermissions.css
index 16d0aee..b308d91 100644
--- a/arc-firefox-theme/chrome/browser/preferences/aboutPermissions.css
+++ b/arc-firefox-theme/chrome/browser/preferences/aboutPermissions.css
@@ -94,8 +94,8 @@
 .pref-icon[type="geo"] {
   list-style-image: url(chrome://browser/skin/Geolocation-64.png);
 }
-.pref-icon[type="push"] {
-  list-style-image: url(chrome://browser/skin/Push-64.png);
+.pref-icon[type="desktop-notification"] {
+  list-style-image: url(chrome://browser/skin/web-notifications-icon.svg);
 }
 .pref-icon[type="indexedDB"] {
   list-style-image: url(chrome://global/skin/icons/question-64.png);
diff --git a/arc-firefox-theme/chrome/browser/preferences/in-content/preferences.css b/arc-firefox-theme/chrome/browser/preferences/in-content/preferences.css
index 30b860f..a7bf8c5 100644
--- a/arc-firefox-theme/chrome/browser/preferences/in-content/preferences.css
+++ b/arc-firefox-theme/chrome/browser/preferences/in-content/preferences.css
@@ -170,6 +170,10 @@ treecol {
   margin-right: 4px !important;
 }
 
+#notificationsPolicyLearnMore {
+  -moz-margin-start: 1.5em !important;
+}
+
 #defaultFontSizeLabel {
   /* !important needed to override common !important rule */
   -moz-margin-start: 4px !important;
@@ -270,7 +274,9 @@ description > html|a {
 }
 
 .indent {
-  -moz-margin-start: 33px;
+  /* !important needed to override -moz-margin-start:0 !important; rule
+     define in common.css for labels */
+  -moz-margin-start: 33px !important;
 }
 
 .text-link {
@@ -588,6 +594,7 @@ description > html|a {
 }
 
 .fxaAccountBoxButtons > button {
+  text-align: center;
   padding-left: 11px;
   padding-right: 11px;
   margin: 0;
@@ -616,8 +623,7 @@ description > html|a {
 }
 
 .fxaMobilePromo {
-  margin-top: 14px;
-  margin-bottom: 41px;
+  margin-bottom: 31px;
 }
 
 #fxaLoginRejectedWarning {
@@ -630,28 +636,16 @@ description > html|a {
   margin-bottom: 27.5px;
 }
 
-.androidLogo {
-  list-style-image: url(chrome://browser/skin/fxa/android.png);
-  max-width: 24px;
-  position: relative;
-  top: 8px;
-  margin: 0px;
-  margin-inline-end: 5px;
-}
-
-.androidLink {
+.androidLink,
+.iOSLink {
   margin: 0;
 }
 
 #tosPP-small {
+  margin-top: 20px;
   margin-bottom: 20px;
 }
 
-.androidAttribution {
-  font-size: 12px;
-  color: #D1D2D3;
-}
-
 @media (min-resolution: 1.1dppx) {
   .fxaSyncIllustration {
     list-style-image: url(chrome://browser/skin/fxa/sync-illustration@2x.png)
@@ -659,9 +653,6 @@ description > html|a {
   .fxaFirefoxLogo {
     list-style-image: url(chrome://browser/skin/fxa/logo@2x.png);
   }
-  .androidLogo {
-    list-style-image: url(chrome://browser/skin/fxa/android@2x.png);
-  }
   #fxaProfileImage {
     list-style-image: url(chrome://browser/skin/fxa/default-avatar@2x.png);
   }
diff --git a/arc-firefox-theme/chrome/browser/sass/_browser-sass.scss b/arc-firefox-theme/chrome/browser/sass/_browser-sass.scss
index fd0d813..25e56b1 100644
--- a/arc-firefox-theme/chrome/browser/sass/_browser-sass.scss
+++ b/arc-firefox-theme/chrome/browser/sass/_browser-sass.scss
@@ -67,6 +67,10 @@ $darker_asset_path_2: if($darker=='true', 'dark', $asset_path);
   background-color: rgba(0,0,0,.3);
 }
 
+//#navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar) {
+//  background-image: linear-gradient(rgba(255,255,255,.4), rgba(255,255,255,.4));
+//}
+
 #navigator-toolbox > toolbar:not(:-moz-lwtheme):not(#toolbar-menubar):not(#TabsToolbar) {
   -moz-appearance: none;
   border-style: none;
@@ -600,6 +604,18 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
 }
 
 /* Primary toolbar buttons */
+
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon {
+  max-width: 16px;
+}
+
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon,
+#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  max-width: 18px;
+}
+
 .findbar-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 {
@@ -630,15 +646,11 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
   padding: 3px 7px;
 }
 
-/* Help SDK icons fit: */
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
-  width: 16px;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon {
-  /* XXXgijs box models strike again: this is 16px + 2 * 7px padding + 2 * 1px border (from the rules above) */
-  width: 32px;
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  /* horizontal padding + border + actual icon width */
+  max-width: 32px !important /* bug 561154 */;
 }
 
 #nav-bar #PanelUI-menu-button {
@@ -715,18 +727,33 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
   padding: 3px;
 }
 
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons {
+  margin-left: 2px;
+  margin-right: 2px;
+}
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons > .toolbarbutton-1 {
+  padding-left: 0;
+  padding-right: 0;
+}
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons:not(:hover) > separator,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
   content: "";
   display: -moz-box;
   width: 1px;
   height: 18px;
   -moz-margin-end: -1px;
-  background-image: var(--toolbarbutton-combined-backgroundimage);
-  background-clip: padding-box;
+  background-image: linear-gradient(currentColor 0, currentColor 100%);
   background-position: center;
   background-repeat: no-repeat;
   background-size: 1px 18px;
-  box-shadow: var(--toolbarbutton-combined-boxshadow);
+  opacity: .2;
+}
+
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbaritem-combined-buttons > separator,
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
+  opacity: .3;
 }
 
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
@@ -735,6 +762,16 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
   //margin-bottom: 3px;
 }
 
+//:-moz-any(#back-button, #forward-button) > .toolbarbutton-icon {
+//  border-color: var(--urlbar-border-color) !important /* bug 561154 */;
+//}
+
+//:-moz-any(#back-button, #forward-button):not(:hover):not(:active):not([open=true]) > .toolbarbutton-icon,
+//:-moz-any(#back-button, #forward-button)[disabled=true] > .toolbarbutton-icon {
+//  background-color: rgba(255,255,255,.25) !important /* bug 561154 */;
+//  background-clip: padding-box;
+//}
+
 //#back-button {
 //  padding-top: 3px;
 //  padding-bottom: 3px;
@@ -755,41 +792,8 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 
 //#back-button > .toolbarbutton-icon {
 //  border-radius: 10000px;
-//  background-clip: padding-box;
 //  padding: 6px;
-//  border: none;
-//  box-shadow: 0 1px 0 hsla(0,0%,100%,.3) inset,
-//              0 0 0 1px hsla(0,0%,100%,.3) inset,
-//              0 0 0 1px hsla(210,54%,20%,.25),
-//              0 1px 0 hsla(210,54%,20%,.35);
-//  background-image: linear-gradient(hsla(0,0%,100%,.6), hsla(0,0%,100%,.1));
-//  transition-property: background-color, box-shadow;
-//  transition-duration: 250ms;
-//}
-
-//#back-button:not([disabled="true"]):not([open="true"]):not(:active):hover > .toolbarbutton-icon {
-//  background-color: hsla(210,48%,96%,.75);
-//  box-shadow: 0 1px 0 hsla(0,0%,100%,.3) inset,
-//              0 0 0 1px hsla(0,0%,100%,.3) inset,
-//              0 0 0 1px hsla(210,54%,20%,.3),
-//              0 1px 0 hsla(210,54%,20%,.4),
-//              0 0 4px hsla(210,54%,20%,.2);
-//}
-
-//#back-button:not([disabled="true"]):hover:active > .toolbarbutton-icon,
-//#back-button[open="true"] > .toolbarbutton-icon {
-//  background-color: hsla(210,54%,20%,.15);
-//  box-shadow: 0 1px 1px hsla(210,54%,20%,.1) inset,
-//              0 0 1px hsla(210,54%,20%,.2) inset,
-//              0 0 0 1px hsla(210,54%,20%,.4),
-//              0 1px 0 hsla(210,54%,20%,.2);
-//  transition: none;
-//}
-
-//#main-window:not([customizing]) #back-button[disabled] > .toolbarbutton-icon {
-//  box-shadow: 0 0 0 1px hsla(210,54%,20%,.55),
-//              0 1px 0 hsla(210,54%,20%,.65) !important;
-//  transition: none;
+//  max-width: 32px; /* horizontal padding + border + icon width */
 //}
 
 #back-button:-moz-locale-dir(rtl) > .toolbarbutton-icon {
@@ -1706,7 +1710,6 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   &:active { list-style-image: url("chrome://browser/skin/custom_images/#{$darker_asset_path_2}/window-controls/minimize_pressed.svg"); }
 }
 
-/* Location bar */
 #urlbar,
 .searchbar-textbox {
   -moz-appearance: none;
@@ -1727,6 +1730,17 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
 //  background-color: -moz-field;
 //}
 
+#urlbar:-moz-lwtheme,
+.searchbar-textbox:-moz-lwtheme {
+  background-color: rgba(255,255,255,.8);
+  color: black;
+}
+
+#urlbar:-moz-lwtheme[focused=true],
+.searchbar-textbox:-moz-lwtheme[focused=true] {
+  background-color: white;
+}
+
 .urlbar-textbox-container {
   -moz-appearance: none;
   -moz-box-align: center;
@@ -1741,7 +1755,7 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   transition: opacity 0.15s ease;
 }
 
-#urlbar:not(:hover) > .urlbar-textbox-container > .urlbar-history-dropmarker {
+#navigator-toolbox:not(:hover) .urlbar-history-dropmarker {
   opacity: 0;
 }
 
@@ -2026,6 +2040,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
   list-style-image: url(chrome://browser/skin/identity-secure.svg);
 }
 
+.insecureLoginForms > #identity-icons > #page-proxy-favicon[pageproxystate="valid"],
 .mixedActiveContent > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-mixed-active-loaded.svg);
 }
@@ -2063,10 +2078,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
   list-style-image: url(chrome://browser/skin/Geolocation-64.png);
 }
 
-.popup-notification-icon[popupid="push"] {
-  list-style-image: url(chrome://browser/skin/Push-64.png);
-}
-
 .popup-notification-icon[popupid="xpinstall-disabled"],
 .popup-notification-icon[popupid="addon-install-blocked"],
 .popup-notification-icon[popupid="addon-install-origin-blocked"] {
@@ -2102,7 +2113,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 }
 
 .popup-notification-icon[popupid="web-notifications"] {
-  list-style-image: url(chrome://browser/skin/notification-64.png);
+  list-style-image: url(chrome://browser/skin/web-notifications-icon.svg);
 }
 
 .popup-notification-icon[popupid="indexedDB-permissions-prompt"],
@@ -2189,10 +2200,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
   list-style-image: url(chrome://browser/skin/Geolocation-16.png);
 }
 
-#push-notification-icon {
-  list-style-image: url(chrome://browser/skin/Push-16.png);
-}
-
 #addons-notification-icon {
   list-style-image: url(chrome://browser/skin/addons/addon-install-anchor.svg#default);
 }
@@ -2301,7 +2308,18 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 
 .web-notifications-notification-icon,
 #web-notifications-notification-icon {
-  list-style-image: url(chrome://browser/skin/notification-16.png);
+  list-style-image: url(chrome://browser/skin/web-notifications-tray.svg);
+  -moz-image-region: rect(0, 16px, 16px, 0);
+}
+
+.web-notifications-notification-icon:hover,
+#web-notifications-notification-icon:hover {
+  -moz-image-region: rect(0, 32px, 16px, 16px);
+}
+
+.web-notifications-notification-icon:hover:active,
+#web-notifications-notification-icon:hover:active {
+  -moz-image-region: rect(0, 48px, 16px, 32px);
 }
 
 .pointerLock-notification-icon,
@@ -3456,6 +3474,31 @@ richlistitem[type~="action"][actiontype="switchtab"] > .ac-url-box > .ac-action-
   background-size: 30px 100%, calc(100% - (2 * 30px)) 100%, 30px 100%;
 }
 
+/* User Context UI - change tab decoration depending on userContextId.
+   Defaults to gray for unknown usercontextids. */
+.tabbrowser-tab[usercontextid] {
+  background-image: linear-gradient(to right, transparent 20%, #909090 30%, #909090 70%, transparent 80%);
+  background-size: auto 2px;
+  background-repeat: no-repeat;
+}
+
+/* Personal User Context */
+.tabbrowser-tab[usercontextid="1"] {
+  background-image: linear-gradient(to right, transparent 20%, #00a7e0 30%, #00a7e0 70%, transparent 80%);
+}
+/* Work User Context */
+.tabbrowser-tab[usercontextid="2"] {
+  background-image: linear-gradient(to right, transparent 20%, #f89c24 30%, #f89c24 70%, transparent 80%);
+}
+/* Banking User Context */
+.tabbrowser-tab[usercontextid="3"] {
+  background-image: linear-gradient(to right, transparent 20%, #7dc14c 30%, #7dc14c 70%, transparent 80%);
+}
+/* Shopping User Context */
+.tabbrowser-tab[usercontextid="4"] {
+  background-image: linear-gradient(to right, transparent 20%, #ee5195 30%, #ee5195 70%, transparent 80%);
+}
+
 /* Tab pointer-events */
 .tabbrowser-tab {
   pointer-events: none;
@@ -3478,13 +3521,23 @@ richlistitem[type~="action"][actiontype="switchtab"] > .ac-url-box > .ac-action-
   position: absolute;
 }
 
-.tabbrowser-tab[pinned][titlechanged]:not([visuallyselected="true"]) > .tab-stack > .tab-content {
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([visuallyselected="true"]),
+.tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([visuallyselected="true"]) {
   background-image: radial-gradient(farthest-corner at center bottom, rgb(255,255,255) 3%, rgba(186,221,251,0.75) 20%, rgba(127,179,255,0.25) 40%, transparent 70%);
   background-position: center bottom var(--tab-toolbar-navbar-overlap);
   background-repeat: no-repeat;
   background-size: 85% 100%;
 }
 
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([pinned]):not([visuallyselected="true"]) {
+  background-position: left bottom var(--tab-toolbar-navbar-overlap);
+  background-size: 34px 100%;
+}
+
+.tab-label[attention]:not([visuallyselected="true"]) {
+  font-weight: bold;
+}
+
 /* Tab separators */
 
 //.tabbrowser-tab::after,
@@ -3696,6 +3749,14 @@ richlistitem[type~="action"][actiontype="switchtab"] > .ac-url-box > .ac-action-
   list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio);
 }
 
+menuitem:hover > hbox > .alltabs-endimage[muted] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-muted-hover);
+}
+
+menuitem:hover > hbox > .alltabs-endimage[soundplaying] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-hover);
+}
+
 /* Sidebar */
 #sidebar-throbber[loading="true"] {
   list-style-image: url("chrome://global/skin/icons/loading_16.png");
@@ -3784,7 +3845,7 @@ toolbarbutton.chevron > .toolbarbutton-icon {
 }
 
 #sync-start-panel-subtitle {
-  margin: 0;
+  margin-bottom: 0;
 }
 
 /* Status panel */
@@ -3967,7 +4028,7 @@ html|*#fullscreen-exit-button {
   -moz-appearance: none;
   display: -moz-box;
   background-color: transparent;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   border-width: 0;
   min-width: 16px;
@@ -3993,7 +4054,7 @@ html|*#fullscreen-exit-button {
 .devtools-responsiveui-toolbarbutton[type=menu] > .toolbarbutton-menu-dropmarker,
 .devtools-responsiveui-toolbarbutton[type=menu-button] > .toolbarbutton-menubutton-dropmarker {
   -moz-appearance: none !important;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   padding: 0 3px;
 }
@@ -4004,25 +4065,25 @@ html|*#fullscreen-exit-button {
 }
 
 .devtools-responsiveui-close {
-  list-style-image: url("chrome://browser/skin/devtools/close.png");
+  list-style-image: url("chrome://devtools/skin/images/close.png");
 }
 
 .devtools-responsiveui-rotate {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate.png");
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate.png");
 }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-close {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png");
   }
 
   .devtools-responsiveui-rotate {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate@2x.png");
   }
 }
 
 .devtools-responsiveui-touch {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch.png");
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch.png");
   -moz-image-region: rect(0px,16px,16px,0px);
 }
 
@@ -4032,7 +4093,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-touch {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch@2x.png");
     -moz-image-region: rect(0px,32px,32px,0px);
   }
 
@@ -4042,12 +4103,12 @@ html|*#fullscreen-exit-button {
 }
 
 .devtools-responsiveui-screenshot {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot.png");
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot.png");
 }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-screenshot {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot@2x.png");
   }
 }
 
@@ -4057,7 +4118,7 @@ html|*#fullscreen-exit-button {
   cursor: ew-resize;
   transform: translate(12px, -12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer.png");
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer.png");
 }
 
 .devtools-responsiveui-resizebarH {
@@ -4066,7 +4127,7 @@ html|*#fullscreen-exit-button {
   cursor: ns-resize;
   transform: translate(-12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer.png");
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer.png");
 }
 
 .devtools-responsiveui-resizehandle {
@@ -4075,7 +4136,7 @@ html|*#fullscreen-exit-button {
   cursor: se-resize;
   transform: translate(12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-se-resizer.png");
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer.png");
 }
 
 /* FxOS custom mode with additional buttons and phone look'n feel */
@@ -4123,7 +4184,7 @@ html|*#fullscreen-exit-button {
   -moz-user-focus: ignore;
   width: 40px;
   height: 30px;
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-home.png");
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-home.png");
 }
 
 .devtools-responsiveui-sleep-button {
@@ -4182,15 +4243,15 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-resizebarV {
-    background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer@2x.png");
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer@2x.png");
   }
 
   .devtools-responsiveui-resizebarH {
-    background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer@2x.png");
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer@2x.png");
   }
 
   .devtools-responsiveui-resizehandle {
-    background-image: url("chrome://browser/skin/devtools/responsive-se-resizer@2x.png");
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer@2x.png");
   }
 }
 
@@ -4242,7 +4303,7 @@ html|*#fullscreen-exit-button {
 
 :root[devtoolstheme="light"] #developer-toolbar > toolbarbutton:not([checked=true]) > image,
 :root[devtoolstheme="light"] .gclitoolbar-input-node:not([focused=true])::before  {
-  filter: url("chrome://browser/skin/devtools/filters.svg#invert");
+  filter: url("chrome://devtools/skin/images/filters.svg#invert");
 }
 
 .developer-toolbar-button > .toolbarbutton-icon,
@@ -4252,7 +4313,7 @@ html|*#fullscreen-exit-button {
 }
 
 #developer-toolbar-toolbox-button {
-  list-style-image: url("chrome://browser/skin/devtools/toggle-tools.png");
+  list-style-image: url("chrome://devtools/skin/images/toggle-tools.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px);
 }
 
@@ -4274,7 +4335,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-toolbox-button {
-    list-style-image: url("chrome://browser/skin/devtools/toggle-tools@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/toggle-tools@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px);
   }
 
@@ -4292,7 +4353,7 @@ html|*#fullscreen-exit-button {
 }
 
 #developer-toolbar-closebutton {
-  list-style-image: url("chrome://browser/skin/devtools/close.png");
+  list-style-image: url("chrome://devtools/skin/images/close.png");
   -moz-appearance: none;
   border: none;
   margin: 0 4px;
@@ -4303,7 +4364,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-closebutton {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png");
   }
 }
 
@@ -4380,7 +4441,7 @@ html|*#gcli-output-frame {
   width: 16px;
   height: 16px;
   margin: 0 2px;
-  background-image: url("chrome://browser/skin/devtools/commandline-icon.png");
+  background-image: url("chrome://devtools/skin/images/commandline-icon.png");
   background-position: 0 center;
   background-size: 32px 16px;
 }
@@ -4391,7 +4452,7 @@ html|*#gcli-output-frame {
 
 @media (min-resolution: 1.1dppx) {
   .gclitoolbar-input-node::before {
-    background-image: url("chrome://browser/skin/devtools/commandline-icon@2x.png");
+    background-image: url("chrome://devtools/skin/images/commandline-icon@2x.png");
   }
 }
 
@@ -4634,10 +4695,6 @@ notification.pluginVulnerable .messageImage {
   background-image: -moz-image-rect(url("chrome://browser/skin/custom_images/#{$asset_path}/toolbar-icons.svg"), 18, 198, 36, 180);
 }
 
-//toolbar[brighttext] #downloads-button[cui-areatype="toolbar"][attention] > #downloads-indicator-anchor > #downloads-indicator-icon {
-//  background-image: -moz-image-rect(url("chrome://browser/skin/Toolbar-inverted.png"), 18, 198, 36, 180);
-//}
-
 #downloads-button[cui-areatype="menu-panel"][attention] {
   list-style-image: url("chrome://browser/skin/downloads/download-glow-menuPanel.png");
   -moz-image-region: auto;
@@ -4930,6 +4987,14 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   transform: none;
 }
 
+chatbox[src^="about:loopconversation#"] .chat-minimize-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#minimize-white");
+}
+
+chatbox[src^="about:loopconversation#"] .chat-swap-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#expand-white");
+}
+
 .chat-loop-hangup {
   list-style-image: url("chrome://browser/skin/social/chat-icons.svg#exit-white");
   background-color: #d13f1a;
@@ -4954,6 +5019,10 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   cursor: inherit;
 }
 
+chatbox[src^="about:loopconversation#"] .chat-title {
+  color: white;
+}
+
 .chat-titlebar {
   height: 26px;
   min-height: 26px;
@@ -4972,6 +5041,11 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   background-color: #f0f0f0;
 }
 
+chatbox[src^="about:loopconversation#"] > .chat-titlebar {
+  background-color: #00a9dc;
+  border-color: #00a9dc;
+}
+
 .chat-titlebar > .notification-anchor-icon {
   margin-left: 2px;
   margin-right: 2px;
@@ -6031,6 +6105,77 @@ notification.heartbeat {
   -moz-margin-end: 0 !important;
 }
 
-.browser-action-panel > .panel-arrowcontainer > .panel-arrowcontent {
+.browser-extension-panel > .panel-arrowcontainer > .panel-arrowcontent {
   padding: 0;
+  overflow: hidden;
+}
+
+/* User Context UI browser styles */
+
+#menu_newUserContextTabPersonal {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg");
+}
+
+#menu_newUserContextTabWork {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg");
+}
+
+#menu_newUserContextTabBanking {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg");
+}
+
+#menu_newUserContextTabShopping {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg");
+}
+
+/* URL Bar Decoration */
+
+#userContext-indicator {
+  height: 16px;
+  width: 16px;
+}
+
+#userContext-label {
+  margin-inline-end: 3px;
+  color: #909090;
+}
+
+#userContext-icons:not([usercontextid]) {
+  display: none;
+}
+
+#userContext-icons {
+  -moz-box-align: center;
+}
+
+/* Personal User Context */
+#userContext-icons[usercontextid="1"] > #userContext-label {
+  color: #00a7e0;
+}
+#userContext-icons[usercontextid="1"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg");
+}
+
+/* Work User Context */
+#userContext-icons[usercontextid="2"] > #userContext-label {
+  color: #f89c24;
+}
+#userContext-icons[usercontextid="2"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg");
+}
+
+/* Banking User Context */
+#userContext-icons[usercontextid="3"] > #userContext-label {
+  color: #7dc14c;
+}
+#userContext-icons[usercontextid="3"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg");
+}
+
+/* Shopping User Context */
+#userContext-icons[usercontextid="4"] > #userContext-label {
+  color: #ee5195;
+}
+#userContext-icons[usercontextid="4"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg");
 }
diff --git a/arc-firefox-theme/chrome/browser/sass/browser-dark.css b/arc-firefox-theme/chrome/browser/sass/browser-dark.css
index f636bac..3d525a6 100644
--- a/arc-firefox-theme/chrome/browser/sass/browser-dark.css
+++ b/arc-firefox-theme/chrome/browser/sass/browser-dark.css
@@ -482,6 +482,15 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
   list-style-image: url("chrome://global/skin/console/console.png"); }
 
 /* Primary toolbar buttons */
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon {
+  max-width: 16px; }
+
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon,
+#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  max-width: 18px; }
+
 .findbar-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 {
@@ -508,14 +517,11 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button)) > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
   padding: 3px 7px; }
 
-/* Help SDK icons fit: */
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
-  width: 16px; }
-
-:-moz-any(#TabsToolbar, #nav-bar) toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon {
-  /* XXXgijs box models strike again: this is 16px + 2 * 7px padding + 2 * 1px border (from the rules above) */
-  width: 32px; }
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  /* horizontal padding + border + actual icon width */
+  max-width: 32px !important; }
 
 #nav-bar #PanelUI-menu-button {
   -moz-padding-start: 5px;
@@ -580,18 +586,30 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:hover:active {
   padding: 3px; }
 
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons {
+  margin-left: 2px;
+  margin-right: 2px; }
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons > .toolbarbutton-1 {
+  padding-left: 0;
+  padding-right: 0; }
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons:not(:hover) > separator,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
   content: "";
   display: -moz-box;
   width: 1px;
   height: 18px;
   -moz-margin-end: -1px;
-  background-image: var(--toolbarbutton-combined-backgroundimage);
-  background-clip: padding-box;
+  background-image: linear-gradient(currentColor 0, currentColor 100%);
   background-position: center;
   background-repeat: no-repeat;
   background-size: 1px 18px;
-  box-shadow: var(--toolbarbutton-combined-boxshadow); }
+  opacity: .2; }
+
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbaritem-combined-buttons > separator,
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
+  opacity: .3; }
 
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
   -moz-margin-start: -4px; }
@@ -1284,7 +1302,6 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   #minimize-button:active {
     list-style-image: url("chrome://browser/skin/custom_images/dark/window-controls/minimize_pressed.svg"); }
 
-/* Location bar */
 #urlbar,
 .searchbar-textbox {
   -moz-appearance: none;
@@ -1305,6 +1322,15 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
 .searchbar-textbox {
   border-radius: 20px; }
 
+#urlbar:-moz-lwtheme,
+.searchbar-textbox:-moz-lwtheme {
+  background-color: rgba(255, 255, 255, 0.8);
+  color: black; }
+
+#urlbar:-moz-lwtheme[focused=true],
+.searchbar-textbox:-moz-lwtheme[focused=true] {
+  background-color: white; }
+
 .urlbar-textbox-container {
   -moz-appearance: none;
   -moz-box-align: center; }
@@ -1316,7 +1342,7 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   -moz-appearance: toolbarbutton-dropdown;
   transition: opacity 0.15s ease; }
 
-#urlbar:not(:hover) > .urlbar-textbox-container > .urlbar-history-dropmarker {
+#navigator-toolbox:not(:hover) .urlbar-history-dropmarker {
   opacity: 0; }
 
 #urlbar-container {
@@ -1490,6 +1516,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 .verifiedIdentity > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-secure.svg); }
 
+.insecureLoginForms > #identity-icons > #page-proxy-favicon[pageproxystate="valid"],
 .mixedActiveContent > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-mixed-active-loaded.svg); }
 
@@ -1519,9 +1546,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 .popup-notification-icon[popupid="geolocation"] {
   list-style-image: url(chrome://browser/skin/Geolocation-64.png); }
 
-.popup-notification-icon[popupid="push"] {
-  list-style-image: url(chrome://browser/skin/Push-64.png); }
-
 .popup-notification-icon[popupid="xpinstall-disabled"],
 .popup-notification-icon[popupid="addon-install-blocked"],
 .popup-notification-icon[popupid="addon-install-origin-blocked"] {
@@ -1549,7 +1573,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
   list-style-image: url(chrome://mozapps/skin/plugins/pluginBlocked-64.png); }
 
 .popup-notification-icon[popupid="web-notifications"] {
-  list-style-image: url(chrome://browser/skin/notification-64.png); }
+  list-style-image: url(chrome://browser/skin/web-notifications-icon.svg); }
 
 .popup-notification-icon[popupid="indexedDB-permissions-prompt"],
 .popup-notification-icon[popupid*="offline-app-requested"],
@@ -1614,9 +1638,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 #geo-notification-icon {
   list-style-image: url(chrome://browser/skin/Geolocation-16.png); }
 
-#push-notification-icon {
-  list-style-image: url(chrome://browser/skin/Push-16.png); }
-
 #addons-notification-icon {
   list-style-image: url(chrome://browser/skin/addons/addon-install-anchor.svg#default); }
 
@@ -1700,7 +1721,16 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 
 .web-notifications-notification-icon,
 #web-notifications-notification-icon {
-  list-style-image: url(chrome://browser/skin/notification-16.png); }
+  list-style-image: url(chrome://browser/skin/web-notifications-tray.svg);
+  -moz-image-region: rect(0, 16px, 16px, 0); }
+
+.web-notifications-notification-icon:hover,
+#web-notifications-notification-icon:hover {
+  -moz-image-region: rect(0, 32px, 16px, 16px); }
+
+.web-notifications-notification-icon:hover:active,
+#web-notifications-notification-icon:hover:active {
+  -moz-image-region: rect(0, 48px, 16px, 32px); }
 
 .pointerLock-notification-icon,
 #pointerLock-notification-icon {
@@ -2571,6 +2601,29 @@ lwtHeader;*/
   background-repeat: no-repeat;
   background-size: 30px 100%, calc(100% - (2 * 30px)) 100%, 30px 100%; }
 
+/* User Context UI - change tab decoration depending on userContextId.
+   Defaults to gray for unknown usercontextids. */
+.tabbrowser-tab[usercontextid] {
+  background-image: linear-gradient(to right, transparent 20%, #909090 30%, #909090 70%, transparent 80%);
+  background-size: auto 2px;
+  background-repeat: no-repeat; }
+
+/* Personal User Context */
+.tabbrowser-tab[usercontextid="1"] {
+  background-image: linear-gradient(to right, transparent 20%, #00a7e0 30%, #00a7e0 70%, transparent 80%); }
+
+/* Work User Context */
+.tabbrowser-tab[usercontextid="2"] {
+  background-image: linear-gradient(to right, transparent 20%, #f89c24 30%, #f89c24 70%, transparent 80%); }
+
+/* Banking User Context */
+.tabbrowser-tab[usercontextid="3"] {
+  background-image: linear-gradient(to right, transparent 20%, #7dc14c 30%, #7dc14c 70%, transparent 80%); }
+
+/* Shopping User Context */
+.tabbrowser-tab[usercontextid="4"] {
+  background-image: linear-gradient(to right, transparent 20%, #ee5195 30%, #ee5195 70%, transparent 80%); }
+
 /* Tab pointer-events */
 .tabbrowser-tab {
   pointer-events: none; }
@@ -2589,12 +2642,20 @@ lwtHeader;*/
   height: 100%;
   position: absolute; }
 
-.tabbrowser-tab[pinned][titlechanged]:not([visuallyselected="true"]) > .tab-stack > .tab-content {
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([visuallyselected="true"]),
+.tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([visuallyselected="true"]) {
   background-image: radial-gradient(farthest-corner at center bottom, white 3%, rgba(186, 221, 251, 0.75) 20%, rgba(127, 179, 255, 0.25) 40%, transparent 70%);
   background-position: center bottom var(--tab-toolbar-navbar-overlap);
   background-repeat: no-repeat;
   background-size: 85% 100%; }
 
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([pinned]):not([visuallyselected="true"]) {
+  background-position: left bottom var(--tab-toolbar-navbar-overlap);
+  background-size: 34px 100%; }
+
+.tab-label[attention]:not([visuallyselected="true"]) {
+  font-weight: bold; }
+
 /* Tab separators */
 /* Also show separators beside the selected tab when dragging it. */
 /* New tab button */
@@ -2729,6 +2790,12 @@ lwtHeader;*/
 .alltabs-endimage[soundplaying] {
   list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio); }
 
+menuitem:hover > hbox > .alltabs-endimage[muted] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-muted-hover); }
+
+menuitem:hover > hbox > .alltabs-endimage[soundplaying] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-hover); }
+
 /* Sidebar */
 #sidebar-throbber[loading="true"] {
   list-style-image: url("chrome://global/skin/icons/loading_16.png");
@@ -2798,7 +2865,7 @@ toolbarbutton.chevron > .toolbarbutton-icon {
   margin-bottom: 5px; }
 
 #sync-start-panel-subtitle {
-  margin: 0; }
+  margin-bottom: 0; }
 
 /* Status panel */
 .statuspanel-label {
@@ -2951,7 +3018,7 @@ html|*#fullscreen-exit-button {
   -moz-appearance: none;
   display: -moz-box;
   background-color: transparent;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   border-width: 0;
   min-width: 16px; }
@@ -2973,7 +3040,7 @@ html|*#fullscreen-exit-button {
 .devtools-responsiveui-toolbarbutton[type=menu] > .toolbarbutton-menu-dropmarker,
 .devtools-responsiveui-toolbarbutton[type=menu-button] > .toolbarbutton-menubutton-dropmarker {
   -moz-appearance: none !important;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   padding: 0 3px; }
 
@@ -2982,19 +3049,19 @@ html|*#fullscreen-exit-button {
   margin-left: 0; }
 
 .devtools-responsiveui-close {
-  list-style-image: url("chrome://browser/skin/devtools/close.png"); }
+  list-style-image: url("chrome://devtools/skin/images/close.png"); }
 
 .devtools-responsiveui-rotate {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate.png"); }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-close {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png"); }
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png"); }
 
   .devtools-responsiveui-rotate {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate@2x.png"); } }
 .devtools-responsiveui-touch {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch.png");
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px); }
 
 .devtools-responsiveui-touch[checked] {
@@ -3002,24 +3069,24 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-touch {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px); }
 
   .devtools-responsiveui-touch[checked] {
     -moz-image-region: rect(0px, 64px, 32px, 32px); } }
 .devtools-responsiveui-screenshot {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot.png"); }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-screenshot {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot@2x.png"); } }
 .devtools-responsiveui-resizebarV {
   width: 7px;
   height: 24px;
   cursor: ew-resize;
   transform: translate(12px, -12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer.png"); }
 
 .devtools-responsiveui-resizebarH {
   width: 24px;
@@ -3027,7 +3094,7 @@ html|*#fullscreen-exit-button {
   cursor: ns-resize;
   transform: translate(-12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer.png"); }
 
 .devtools-responsiveui-resizehandle {
   width: 16px;
@@ -3035,7 +3102,7 @@ html|*#fullscreen-exit-button {
   cursor: se-resize;
   transform: translate(12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-se-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer.png"); }
 
 /* FxOS custom mode with additional buttons and phone look'n feel */
 /* Hide devtools manual resizer */
@@ -3071,7 +3138,7 @@ html|*#fullscreen-exit-button {
   -moz-user-focus: ignore;
   width: 40px;
   height: 30px;
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-home.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-home.png"); }
 
 .devtools-responsiveui-sleep-button {
   -moz-user-focus: ignore;
@@ -3117,13 +3184,13 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-resizebarV {
-    background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer@2x.png"); }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer@2x.png"); }
 
   .devtools-responsiveui-resizebarH {
-    background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer@2x.png"); }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer@2x.png"); }
 
   .devtools-responsiveui-resizehandle {
-    background-image: url("chrome://browser/skin/devtools/responsive-se-resizer@2x.png"); } }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer@2x.png"); } }
 /* Developer toolbar */
 /* NOTE: THESE NEED TO STAY IN SYNC WITH LIGHT-THEME.CSS AND DARK-THEME.CSS.
    We are copy/pasting variables from light-theme and dark-theme,
@@ -3180,7 +3247,7 @@ html|*#fullscreen-exit-button {
 
 :root[devtoolstheme="light"] #developer-toolbar > toolbarbutton:not([checked=true]) > image,
 :root[devtoolstheme="light"] .gclitoolbar-input-node:not([focused=true])::before {
-  filter: url("chrome://browser/skin/devtools/filters.svg#invert"); }
+  filter: url("chrome://devtools/skin/images/filters.svg#invert"); }
 
 .developer-toolbar-button > .toolbarbutton-icon,
 #developer-toolbar-closebutton > .toolbarbutton-icon {
@@ -3188,7 +3255,7 @@ html|*#fullscreen-exit-button {
   height: 16px; }
 
 #developer-toolbar-toolbox-button {
-  list-style-image: url("chrome://browser/skin/devtools/toggle-tools.png");
+  list-style-image: url("chrome://devtools/skin/images/toggle-tools.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px); }
 
 #developer-toolbar-toolbox-button > label {
@@ -3205,7 +3272,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-toolbox-button {
-    list-style-image: url("chrome://browser/skin/devtools/toggle-tools@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/toggle-tools@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px); }
 
   #developer-toolbar-toolbox-button:hover {
@@ -3217,7 +3284,7 @@ html|*#fullscreen-exit-button {
   #developer-toolbar-toolbox-button[checked=true] {
     -moz-image-region: rect(0px, 128px, 32px, 96px); } }
 #developer-toolbar-closebutton {
-  list-style-image: url("chrome://browser/skin/devtools/close.png");
+  list-style-image: url("chrome://devtools/skin/images/close.png");
   -moz-appearance: none;
   border: none;
   margin: 0 4px;
@@ -3227,7 +3294,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-closebutton {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png"); } }
 #developer-toolbar-closebutton > .toolbarbutton-icon {
   /* XXX Buttons have padding in widget/ that we don't want here but can't override with good CSS, so we must
      use evil CSS to give the impression of smaller content */
@@ -3289,7 +3356,7 @@ html|*#gcli-output-frame {
   width: 16px;
   height: 16px;
   margin: 0 2px;
-  background-image: url("chrome://browser/skin/devtools/commandline-icon.png");
+  background-image: url("chrome://devtools/skin/images/commandline-icon.png");
   background-position: 0 center;
   background-size: 32px 16px; }
 
@@ -3298,7 +3365,7 @@ html|*#gcli-output-frame {
 
 @media (min-resolution: 1.1dppx) {
   .gclitoolbar-input-node::before {
-    background-image: url("chrome://browser/skin/devtools/commandline-icon@2x.png"); } }
+    background-image: url("chrome://devtools/skin/images/commandline-icon@2x.png"); } }
 .gclitoolbar-input-node > .textbox-input-box > html|*.textbox-input::-moz-selection {
   background-color: var(--selection-background);
   color: var(--selection-color);
@@ -3734,6 +3801,12 @@ toolbar[brighttext] #downloads-indicator-counter {
 chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   transform: none; }
 
+chatbox[src^="about:loopconversation#"] .chat-minimize-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#minimize-white"); }
+
+chatbox[src^="about:loopconversation#"] .chat-swap-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#expand-white"); }
+
 .chat-loop-hangup {
   list-style-image: url("chrome://browser/skin/social/chat-icons.svg#exit-white");
   background-color: #d13f1a;
@@ -3755,6 +3828,9 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   text-shadow: none;
   cursor: inherit; }
 
+chatbox[src^="about:loopconversation#"] .chat-title {
+  color: white; }
+
 .chat-titlebar {
   height: 26px;
   min-height: 26px;
@@ -3771,6 +3847,10 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
 .chat-titlebar[selected] {
   background-color: #f0f0f0; }
 
+chatbox[src^="about:loopconversation#"] > .chat-titlebar {
+  background-color: #00a9dc;
+  border-color: #00a9dc; }
+
 .chat-titlebar > .notification-anchor-icon {
   margin-left: 2px;
   margin-right: 2px; }
@@ -4627,5 +4707,62 @@ notification.heartbeat {
   -moz-padding-end: 0 !important;
   -moz-margin-end: 0 !important; }
 
-.browser-action-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0; }
+.browser-extension-panel > .panel-arrowcontainer > .panel-arrowcontent {
+  padding: 0;
+  overflow: hidden; }
+
+/* User Context UI browser styles */
+#menu_newUserContextTabPersonal {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg"); }
+
+#menu_newUserContextTabWork {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg"); }
+
+#menu_newUserContextTabBanking {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg"); }
+
+#menu_newUserContextTabShopping {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg"); }
+
+/* URL Bar Decoration */
+#userContext-indicator {
+  height: 16px;
+  width: 16px; }
+
+#userContext-label {
+  margin-inline-end: 3px;
+  color: #909090; }
+
+#userContext-icons:not([usercontextid]) {
+  display: none; }
+
+#userContext-icons {
+  -moz-box-align: center; }
+
+/* Personal User Context */
+#userContext-icons[usercontextid="1"] > #userContext-label {
+  color: #00a7e0; }
+
+#userContext-icons[usercontextid="1"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg"); }
+
+/* Work User Context */
+#userContext-icons[usercontextid="2"] > #userContext-label {
+  color: #f89c24; }
+
+#userContext-icons[usercontextid="2"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg"); }
+
+/* Banking User Context */
+#userContext-icons[usercontextid="3"] > #userContext-label {
+  color: #7dc14c; }
+
+#userContext-icons[usercontextid="3"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg"); }
+
+/* Shopping User Context */
+#userContext-icons[usercontextid="4"] > #userContext-label {
+  color: #ee5195; }
+
+#userContext-icons[usercontextid="4"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg"); }
diff --git a/arc-firefox-theme/chrome/browser/sass/browser-darker.css b/arc-firefox-theme/chrome/browser/sass/browser-darker.css
index 84b7369..e238cba 100644
--- a/arc-firefox-theme/chrome/browser/sass/browser-darker.css
+++ b/arc-firefox-theme/chrome/browser/sass/browser-darker.css
@@ -482,6 +482,15 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
   list-style-image: url("chrome://global/skin/console/console.png"); }
 
 /* Primary toolbar buttons */
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon {
+  max-width: 16px; }
+
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon,
+#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  max-width: 18px; }
+
 .findbar-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 {
@@ -508,14 +517,11 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button)) > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
   padding: 3px 7px; }
 
-/* Help SDK icons fit: */
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
-  width: 16px; }
-
-:-moz-any(#TabsToolbar, #nav-bar) toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon {
-  /* XXXgijs box models strike again: this is 16px + 2 * 7px padding + 2 * 1px border (from the rules above) */
-  width: 32px; }
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  /* horizontal padding + border + actual icon width */
+  max-width: 32px !important; }
 
 #nav-bar #PanelUI-menu-button {
   -moz-padding-start: 5px;
@@ -580,18 +586,30 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:hover:active {
   padding: 3px; }
 
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons {
+  margin-left: 2px;
+  margin-right: 2px; }
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons > .toolbarbutton-1 {
+  padding-left: 0;
+  padding-right: 0; }
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons:not(:hover) > separator,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
   content: "";
   display: -moz-box;
   width: 1px;
   height: 18px;
   -moz-margin-end: -1px;
-  background-image: var(--toolbarbutton-combined-backgroundimage);
-  background-clip: padding-box;
+  background-image: linear-gradient(currentColor 0, currentColor 100%);
   background-position: center;
   background-repeat: no-repeat;
   background-size: 1px 18px;
-  box-shadow: var(--toolbarbutton-combined-boxshadow); }
+  opacity: .2; }
+
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbaritem-combined-buttons > separator,
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
+  opacity: .3; }
 
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
   -moz-margin-start: -4px; }
@@ -1284,7 +1302,6 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   #minimize-button:active {
     list-style-image: url("chrome://browser/skin/custom_images/dark/window-controls/minimize_pressed.svg"); }
 
-/* Location bar */
 #urlbar,
 .searchbar-textbox {
   -moz-appearance: none;
@@ -1304,6 +1321,15 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
 .searchbar-textbox {
   border-radius: 20px; }
 
+#urlbar:-moz-lwtheme,
+.searchbar-textbox:-moz-lwtheme {
+  background-color: rgba(255, 255, 255, 0.8);
+  color: black; }
+
+#urlbar:-moz-lwtheme[focused=true],
+.searchbar-textbox:-moz-lwtheme[focused=true] {
+  background-color: white; }
+
 .urlbar-textbox-container {
   -moz-appearance: none;
   -moz-box-align: center; }
@@ -1315,7 +1341,7 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   -moz-appearance: toolbarbutton-dropdown;
   transition: opacity 0.15s ease; }
 
-#urlbar:not(:hover) > .urlbar-textbox-container > .urlbar-history-dropmarker {
+#navigator-toolbox:not(:hover) .urlbar-history-dropmarker {
   opacity: 0; }
 
 #urlbar-container {
@@ -1489,6 +1515,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 .verifiedIdentity > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-secure.svg); }
 
+.insecureLoginForms > #identity-icons > #page-proxy-favicon[pageproxystate="valid"],
 .mixedActiveContent > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-mixed-active-loaded.svg); }
 
@@ -1518,9 +1545,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 .popup-notification-icon[popupid="geolocation"] {
   list-style-image: url(chrome://browser/skin/Geolocation-64.png); }
 
-.popup-notification-icon[popupid="push"] {
-  list-style-image: url(chrome://browser/skin/Push-64.png); }
-
 .popup-notification-icon[popupid="xpinstall-disabled"],
 .popup-notification-icon[popupid="addon-install-blocked"],
 .popup-notification-icon[popupid="addon-install-origin-blocked"] {
@@ -1548,7 +1572,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
   list-style-image: url(chrome://mozapps/skin/plugins/pluginBlocked-64.png); }
 
 .popup-notification-icon[popupid="web-notifications"] {
-  list-style-image: url(chrome://browser/skin/notification-64.png); }
+  list-style-image: url(chrome://browser/skin/web-notifications-icon.svg); }
 
 .popup-notification-icon[popupid="indexedDB-permissions-prompt"],
 .popup-notification-icon[popupid*="offline-app-requested"],
@@ -1613,9 +1637,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 #geo-notification-icon {
   list-style-image: url(chrome://browser/skin/Geolocation-16.png); }
 
-#push-notification-icon {
-  list-style-image: url(chrome://browser/skin/Push-16.png); }
-
 #addons-notification-icon {
   list-style-image: url(chrome://browser/skin/addons/addon-install-anchor.svg#default); }
 
@@ -1699,7 +1720,16 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 
 .web-notifications-notification-icon,
 #web-notifications-notification-icon {
-  list-style-image: url(chrome://browser/skin/notification-16.png); }
+  list-style-image: url(chrome://browser/skin/web-notifications-tray.svg);
+  -moz-image-region: rect(0, 16px, 16px, 0); }
+
+.web-notifications-notification-icon:hover,
+#web-notifications-notification-icon:hover {
+  -moz-image-region: rect(0, 32px, 16px, 16px); }
+
+.web-notifications-notification-icon:hover:active,
+#web-notifications-notification-icon:hover:active {
+  -moz-image-region: rect(0, 48px, 16px, 32px); }
 
 .pointerLock-notification-icon,
 #pointerLock-notification-icon {
@@ -2571,6 +2601,29 @@ lwtHeader;*/
   background-repeat: no-repeat;
   background-size: 30px 100%, calc(100% - (2 * 30px)) 100%, 30px 100%; }
 
+/* User Context UI - change tab decoration depending on userContextId.
+   Defaults to gray for unknown usercontextids. */
+.tabbrowser-tab[usercontextid] {
+  background-image: linear-gradient(to right, transparent 20%, #909090 30%, #909090 70%, transparent 80%);
+  background-size: auto 2px;
+  background-repeat: no-repeat; }
+
+/* Personal User Context */
+.tabbrowser-tab[usercontextid="1"] {
+  background-image: linear-gradient(to right, transparent 20%, #00a7e0 30%, #00a7e0 70%, transparent 80%); }
+
+/* Work User Context */
+.tabbrowser-tab[usercontextid="2"] {
+  background-image: linear-gradient(to right, transparent 20%, #f89c24 30%, #f89c24 70%, transparent 80%); }
+
+/* Banking User Context */
+.tabbrowser-tab[usercontextid="3"] {
+  background-image: linear-gradient(to right, transparent 20%, #7dc14c 30%, #7dc14c 70%, transparent 80%); }
+
+/* Shopping User Context */
+.tabbrowser-tab[usercontextid="4"] {
+  background-image: linear-gradient(to right, transparent 20%, #ee5195 30%, #ee5195 70%, transparent 80%); }
+
 /* Tab pointer-events */
 .tabbrowser-tab {
   pointer-events: none; }
@@ -2589,12 +2642,20 @@ lwtHeader;*/
   height: 100%;
   position: absolute; }
 
-.tabbrowser-tab[pinned][titlechanged]:not([visuallyselected="true"]) > .tab-stack > .tab-content {
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([visuallyselected="true"]),
+.tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([visuallyselected="true"]) {
   background-image: radial-gradient(farthest-corner at center bottom, white 3%, rgba(186, 221, 251, 0.75) 20%, rgba(127, 179, 255, 0.25) 40%, transparent 70%);
   background-position: center bottom var(--tab-toolbar-navbar-overlap);
   background-repeat: no-repeat;
   background-size: 85% 100%; }
 
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([pinned]):not([visuallyselected="true"]) {
+  background-position: left bottom var(--tab-toolbar-navbar-overlap);
+  background-size: 34px 100%; }
+
+.tab-label[attention]:not([visuallyselected="true"]) {
+  font-weight: bold; }
+
 /* Tab separators */
 /* Also show separators beside the selected tab when dragging it. */
 /* New tab button */
@@ -2729,6 +2790,12 @@ lwtHeader;*/
 .alltabs-endimage[soundplaying] {
   list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio); }
 
+menuitem:hover > hbox > .alltabs-endimage[muted] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-muted-hover); }
+
+menuitem:hover > hbox > .alltabs-endimage[soundplaying] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-hover); }
+
 /* Sidebar */
 #sidebar-throbber[loading="true"] {
   list-style-image: url("chrome://global/skin/icons/loading_16.png");
@@ -2798,7 +2865,7 @@ toolbarbutton.chevron > .toolbarbutton-icon {
   margin-bottom: 5px; }
 
 #sync-start-panel-subtitle {
-  margin: 0; }
+  margin-bottom: 0; }
 
 /* Status panel */
 .statuspanel-label {
@@ -2951,7 +3018,7 @@ html|*#fullscreen-exit-button {
   -moz-appearance: none;
   display: -moz-box;
   background-color: transparent;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   border-width: 0;
   min-width: 16px; }
@@ -2973,7 +3040,7 @@ html|*#fullscreen-exit-button {
 .devtools-responsiveui-toolbarbutton[type=menu] > .toolbarbutton-menu-dropmarker,
 .devtools-responsiveui-toolbarbutton[type=menu-button] > .toolbarbutton-menubutton-dropmarker {
   -moz-appearance: none !important;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   padding: 0 3px; }
 
@@ -2982,19 +3049,19 @@ html|*#fullscreen-exit-button {
   margin-left: 0; }
 
 .devtools-responsiveui-close {
-  list-style-image: url("chrome://browser/skin/devtools/close.png"); }
+  list-style-image: url("chrome://devtools/skin/images/close.png"); }
 
 .devtools-responsiveui-rotate {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate.png"); }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-close {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png"); }
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png"); }
 
   .devtools-responsiveui-rotate {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate@2x.png"); } }
 .devtools-responsiveui-touch {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch.png");
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px); }
 
 .devtools-responsiveui-touch[checked] {
@@ -3002,24 +3069,24 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-touch {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px); }
 
   .devtools-responsiveui-touch[checked] {
     -moz-image-region: rect(0px, 64px, 32px, 32px); } }
 .devtools-responsiveui-screenshot {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot.png"); }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-screenshot {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot@2x.png"); } }
 .devtools-responsiveui-resizebarV {
   width: 7px;
   height: 24px;
   cursor: ew-resize;
   transform: translate(12px, -12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer.png"); }
 
 .devtools-responsiveui-resizebarH {
   width: 24px;
@@ -3027,7 +3094,7 @@ html|*#fullscreen-exit-button {
   cursor: ns-resize;
   transform: translate(-12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer.png"); }
 
 .devtools-responsiveui-resizehandle {
   width: 16px;
@@ -3035,7 +3102,7 @@ html|*#fullscreen-exit-button {
   cursor: se-resize;
   transform: translate(12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-se-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer.png"); }
 
 /* FxOS custom mode with additional buttons and phone look'n feel */
 /* Hide devtools manual resizer */
@@ -3071,7 +3138,7 @@ html|*#fullscreen-exit-button {
   -moz-user-focus: ignore;
   width: 40px;
   height: 30px;
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-home.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-home.png"); }
 
 .devtools-responsiveui-sleep-button {
   -moz-user-focus: ignore;
@@ -3117,13 +3184,13 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-resizebarV {
-    background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer@2x.png"); }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer@2x.png"); }
 
   .devtools-responsiveui-resizebarH {
-    background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer@2x.png"); }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer@2x.png"); }
 
   .devtools-responsiveui-resizehandle {
-    background-image: url("chrome://browser/skin/devtools/responsive-se-resizer@2x.png"); } }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer@2x.png"); } }
 /* Developer toolbar */
 /* NOTE: THESE NEED TO STAY IN SYNC WITH LIGHT-THEME.CSS AND DARK-THEME.CSS.
    We are copy/pasting variables from light-theme and dark-theme,
@@ -3180,7 +3247,7 @@ html|*#fullscreen-exit-button {
 
 :root[devtoolstheme="light"] #developer-toolbar > toolbarbutton:not([checked=true]) > image,
 :root[devtoolstheme="light"] .gclitoolbar-input-node:not([focused=true])::before {
-  filter: url("chrome://browser/skin/devtools/filters.svg#invert"); }
+  filter: url("chrome://devtools/skin/images/filters.svg#invert"); }
 
 .developer-toolbar-button > .toolbarbutton-icon,
 #developer-toolbar-closebutton > .toolbarbutton-icon {
@@ -3188,7 +3255,7 @@ html|*#fullscreen-exit-button {
   height: 16px; }
 
 #developer-toolbar-toolbox-button {
-  list-style-image: url("chrome://browser/skin/devtools/toggle-tools.png");
+  list-style-image: url("chrome://devtools/skin/images/toggle-tools.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px); }
 
 #developer-toolbar-toolbox-button > label {
@@ -3205,7 +3272,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-toolbox-button {
-    list-style-image: url("chrome://browser/skin/devtools/toggle-tools@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/toggle-tools@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px); }
 
   #developer-toolbar-toolbox-button:hover {
@@ -3217,7 +3284,7 @@ html|*#fullscreen-exit-button {
   #developer-toolbar-toolbox-button[checked=true] {
     -moz-image-region: rect(0px, 128px, 32px, 96px); } }
 #developer-toolbar-closebutton {
-  list-style-image: url("chrome://browser/skin/devtools/close.png");
+  list-style-image: url("chrome://devtools/skin/images/close.png");
   -moz-appearance: none;
   border: none;
   margin: 0 4px;
@@ -3227,7 +3294,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-closebutton {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png"); } }
 #developer-toolbar-closebutton > .toolbarbutton-icon {
   /* XXX Buttons have padding in widget/ that we don't want here but can't override with good CSS, so we must
      use evil CSS to give the impression of smaller content */
@@ -3289,7 +3356,7 @@ html|*#gcli-output-frame {
   width: 16px;
   height: 16px;
   margin: 0 2px;
-  background-image: url("chrome://browser/skin/devtools/commandline-icon.png");
+  background-image: url("chrome://devtools/skin/images/commandline-icon.png");
   background-position: 0 center;
   background-size: 32px 16px; }
 
@@ -3298,7 +3365,7 @@ html|*#gcli-output-frame {
 
 @media (min-resolution: 1.1dppx) {
   .gclitoolbar-input-node::before {
-    background-image: url("chrome://browser/skin/devtools/commandline-icon@2x.png"); } }
+    background-image: url("chrome://devtools/skin/images/commandline-icon@2x.png"); } }
 .gclitoolbar-input-node > .textbox-input-box > html|*.textbox-input::-moz-selection {
   background-color: var(--selection-background);
   color: var(--selection-color);
@@ -3734,6 +3801,12 @@ toolbar[brighttext] #downloads-indicator-counter {
 chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   transform: none; }
 
+chatbox[src^="about:loopconversation#"] .chat-minimize-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#minimize-white"); }
+
+chatbox[src^="about:loopconversation#"] .chat-swap-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#expand-white"); }
+
 .chat-loop-hangup {
   list-style-image: url("chrome://browser/skin/social/chat-icons.svg#exit-white");
   background-color: #d13f1a;
@@ -3755,6 +3828,9 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   text-shadow: none;
   cursor: inherit; }
 
+chatbox[src^="about:loopconversation#"] .chat-title {
+  color: white; }
+
 .chat-titlebar {
   height: 26px;
   min-height: 26px;
@@ -3771,6 +3847,10 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
 .chat-titlebar[selected] {
   background-color: #f0f0f0; }
 
+chatbox[src^="about:loopconversation#"] > .chat-titlebar {
+  background-color: #00a9dc;
+  border-color: #00a9dc; }
+
 .chat-titlebar > .notification-anchor-icon {
   margin-left: 2px;
   margin-right: 2px; }
@@ -4627,5 +4707,62 @@ notification.heartbeat {
   -moz-padding-end: 0 !important;
   -moz-margin-end: 0 !important; }
 
-.browser-action-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0; }
+.browser-extension-panel > .panel-arrowcontainer > .panel-arrowcontent {
+  padding: 0;
+  overflow: hidden; }
+
+/* User Context UI browser styles */
+#menu_newUserContextTabPersonal {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg"); }
+
+#menu_newUserContextTabWork {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg"); }
+
+#menu_newUserContextTabBanking {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg"); }
+
+#menu_newUserContextTabShopping {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg"); }
+
+/* URL Bar Decoration */
+#userContext-indicator {
+  height: 16px;
+  width: 16px; }
+
+#userContext-label {
+  margin-inline-end: 3px;
+  color: #909090; }
+
+#userContext-icons:not([usercontextid]) {
+  display: none; }
+
+#userContext-icons {
+  -moz-box-align: center; }
+
+/* Personal User Context */
+#userContext-icons[usercontextid="1"] > #userContext-label {
+  color: #00a7e0; }
+
+#userContext-icons[usercontextid="1"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg"); }
+
+/* Work User Context */
+#userContext-icons[usercontextid="2"] > #userContext-label {
+  color: #f89c24; }
+
+#userContext-icons[usercontextid="2"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg"); }
+
+/* Banking User Context */
+#userContext-icons[usercontextid="3"] > #userContext-label {
+  color: #7dc14c; }
+
+#userContext-icons[usercontextid="3"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg"); }
+
+/* Shopping User Context */
+#userContext-icons[usercontextid="4"] > #userContext-label {
+  color: #ee5195; }
+
+#userContext-icons[usercontextid="4"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg"); }
diff --git a/arc-firefox-theme/chrome/browser/sass/browser-light.css b/arc-firefox-theme/chrome/browser/sass/browser-light.css
index 3752502..7229492 100644
--- a/arc-firefox-theme/chrome/browser/sass/browser-light.css
+++ b/arc-firefox-theme/chrome/browser/sass/browser-light.css
@@ -482,6 +482,15 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
   list-style-image: url("chrome://global/skin/console/console.png"); }
 
 /* Primary toolbar buttons */
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon {
+  max-width: 16px; }
+
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > .toolbarbutton-icon,
+:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button) > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon,
+#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  max-width: 18px; }
+
 .findbar-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 {
@@ -508,14 +517,11 @@ menuitem:not([type]):not(.menuitem-tooltip):not(.menuitem-iconic-tooltip) {
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(#back-button, #forward-button, #home-button, #print-button, #downloads-button, #bookmarks-menu-button, #new-tab-button, #new-window-button, #fullscreen-button, #sync-button, #feed-button, #tabview-button, #social-share-button, #open-file-button, #find-button, #developer-button, #preferences-button, #privatebrowsing-button, #save-page-button, #add-ons-button, #history-panelmenu, #nav-bar-overflow-button, #PanelUI-menu-button, #characterencoding-button, #email-link-button, #sidebar-button, #zoom-out-button, #zoom-reset-button, #zoom-in-button, #cut-button, #copy-button, #paste-button, #e10s-button, #panic-button, #web-apps-button, #webide-button, #loop-button, #pocket-button)) > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
   padding: 3px 7px; }
 
-/* Help SDK icons fit: */
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon,
-toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
-  width: 16px; }
-
-:-moz-any(#TabsToolbar, #nav-bar) toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-icon {
-  /* XXXgijs box models strike again: this is 16px + 2 * 7px padding + 2 * 1px border (from the rules above) */
-  width: 32px; }
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
+:-moz-any(#TabsToolbar, #nav-bar) #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
+  /* horizontal padding + border + actual icon width */
+  max-width: 32px !important; }
 
 #nav-bar #PanelUI-menu-button {
   -moz-padding-start: 5px;
@@ -580,18 +586,30 @@ toolbarbutton[constrain-size="true"][cui-areatype="toolbar"] > .toolbarbutton-ba
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:hover:active {
   padding: 3px; }
 
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons {
+  margin-left: 2px;
+  margin-right: 2px; }
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons > .toolbarbutton-1 {
+  padding-left: 0;
+  padding-right: 0; }
+
+:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons:not(:hover) > separator,
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
   content: "";
   display: -moz-box;
   width: 1px;
   height: 18px;
   -moz-margin-end: -1px;
-  background-image: var(--toolbarbutton-combined-backgroundimage);
-  background-clip: padding-box;
+  background-image: linear-gradient(currentColor 0, currentColor 100%);
   background-position: center;
   background-repeat: no-repeat;
   background-size: 1px 18px;
-  box-shadow: var(--toolbarbutton-combined-boxshadow); }
+  opacity: .2; }
+
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbaritem-combined-buttons > separator,
+:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
+  opacity: .3; }
 
 :-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
   -moz-margin-start: -4px; }
@@ -1284,7 +1302,6 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   #minimize-button:active {
     list-style-image: url("chrome://browser/skin/custom_images/light/window-controls/minimize_pressed.svg"); }
 
-/* Location bar */
 #urlbar,
 .searchbar-textbox {
   -moz-appearance: none;
@@ -1304,6 +1321,15 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
 .searchbar-textbox {
   border-radius: 20px; }
 
+#urlbar:-moz-lwtheme,
+.searchbar-textbox:-moz-lwtheme {
+  background-color: rgba(255, 255, 255, 0.8);
+  color: black; }
+
+#urlbar:-moz-lwtheme[focused=true],
+.searchbar-textbox:-moz-lwtheme[focused=true] {
+  background-color: white; }
+
 .urlbar-textbox-container {
   -moz-appearance: none;
   -moz-box-align: center; }
@@ -1315,7 +1341,7 @@ toolbar[brighttext] #PanelUI-menu-button.thumburger {
   -moz-appearance: toolbarbutton-dropdown;
   transition: opacity 0.15s ease; }
 
-#urlbar:not(:hover) > .urlbar-textbox-container > .urlbar-history-dropmarker {
+#navigator-toolbox:not(:hover) .urlbar-history-dropmarker {
   opacity: 0; }
 
 #urlbar-container {
@@ -1489,6 +1515,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 .verifiedIdentity > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-secure.svg); }
 
+.insecureLoginForms > #identity-icons > #page-proxy-favicon[pageproxystate="valid"],
 .mixedActiveContent > #identity-icons > #page-proxy-favicon[pageproxystate="valid"] {
   list-style-image: url(chrome://browser/skin/identity-mixed-active-loaded.svg); }
 
@@ -1518,9 +1545,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 .popup-notification-icon[popupid="geolocation"] {
   list-style-image: url(chrome://browser/skin/Geolocation-64.png); }
 
-.popup-notification-icon[popupid="push"] {
-  list-style-image: url(chrome://browser/skin/Push-64.png); }
-
 .popup-notification-icon[popupid="xpinstall-disabled"],
 .popup-notification-icon[popupid="addon-install-blocked"],
 .popup-notification-icon[popupid="addon-install-origin-blocked"] {
@@ -1548,7 +1572,7 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
   list-style-image: url(chrome://mozapps/skin/plugins/pluginBlocked-64.png); }
 
 .popup-notification-icon[popupid="web-notifications"] {
-  list-style-image: url(chrome://browser/skin/notification-64.png); }
+  list-style-image: url(chrome://browser/skin/web-notifications-icon.svg); }
 
 .popup-notification-icon[popupid="indexedDB-permissions-prompt"],
 .popup-notification-icon[popupid*="offline-app-requested"],
@@ -1613,9 +1637,6 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 #geo-notification-icon {
   list-style-image: url(chrome://browser/skin/Geolocation-16.png); }
 
-#push-notification-icon {
-  list-style-image: url(chrome://browser/skin/Push-16.png); }
-
 #addons-notification-icon {
   list-style-image: url(chrome://browser/skin/addons/addon-install-anchor.svg#default); }
 
@@ -1699,7 +1720,16 @@ window:not([chromehidden~="toolbar"]) #urlbar-wrapper > #urlbar > #identity-box
 
 .web-notifications-notification-icon,
 #web-notifications-notification-icon {
-  list-style-image: url(chrome://browser/skin/notification-16.png); }
+  list-style-image: url(chrome://browser/skin/web-notifications-tray.svg);
+  -moz-image-region: rect(0, 16px, 16px, 0); }
+
+.web-notifications-notification-icon:hover,
+#web-notifications-notification-icon:hover {
+  -moz-image-region: rect(0, 32px, 16px, 16px); }
+
+.web-notifications-notification-icon:hover:active,
+#web-notifications-notification-icon:hover:active {
+  -moz-image-region: rect(0, 48px, 16px, 32px); }
 
 .pointerLock-notification-icon,
 #pointerLock-notification-icon {
@@ -2571,6 +2601,29 @@ lwtHeader;*/
   background-repeat: no-repeat;
   background-size: 30px 100%, calc(100% - (2 * 30px)) 100%, 30px 100%; }
 
+/* User Context UI - change tab decoration depending on userContextId.
+   Defaults to gray for unknown usercontextids. */
+.tabbrowser-tab[usercontextid] {
+  background-image: linear-gradient(to right, transparent 20%, #909090 30%, #909090 70%, transparent 80%);
+  background-size: auto 2px;
+  background-repeat: no-repeat; }
+
+/* Personal User Context */
+.tabbrowser-tab[usercontextid="1"] {
+  background-image: linear-gradient(to right, transparent 20%, #00a7e0 30%, #00a7e0 70%, transparent 80%); }
+
+/* Work User Context */
+.tabbrowser-tab[usercontextid="2"] {
+  background-image: linear-gradient(to right, transparent 20%, #f89c24 30%, #f89c24 70%, transparent 80%); }
+
+/* Banking User Context */
+.tabbrowser-tab[usercontextid="3"] {
+  background-image: linear-gradient(to right, transparent 20%, #7dc14c 30%, #7dc14c 70%, transparent 80%); }
+
+/* Shopping User Context */
+.tabbrowser-tab[usercontextid="4"] {
+  background-image: linear-gradient(to right, transparent 20%, #ee5195 30%, #ee5195 70%, transparent 80%); }
+
 /* Tab pointer-events */
 .tabbrowser-tab {
   pointer-events: none; }
@@ -2589,12 +2642,20 @@ lwtHeader;*/
   height: 100%;
   position: absolute; }
 
-.tabbrowser-tab[pinned][titlechanged]:not([visuallyselected="true"]) > .tab-stack > .tab-content {
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([visuallyselected="true"]),
+.tabbrowser-tab > .tab-stack > .tab-content[pinned][titlechanged]:not([visuallyselected="true"]) {
   background-image: radial-gradient(farthest-corner at center bottom, white 3%, rgba(186, 221, 251, 0.75) 20%, rgba(127, 179, 255, 0.25) 40%, transparent 70%);
   background-position: center bottom var(--tab-toolbar-navbar-overlap);
   background-repeat: no-repeat;
   background-size: 85% 100%; }
 
+.tabbrowser-tab[image] > .tab-stack > .tab-content[attention]:not([pinned]):not([visuallyselected="true"]) {
+  background-position: left bottom var(--tab-toolbar-navbar-overlap);
+  background-size: 34px 100%; }
+
+.tab-label[attention]:not([visuallyselected="true"]) {
+  font-weight: bold; }
+
 /* Tab separators */
 /* Also show separators beside the selected tab when dragging it. */
 /* New tab button */
@@ -2729,6 +2790,12 @@ lwtHeader;*/
 .alltabs-endimage[soundplaying] {
   list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio); }
 
+menuitem:hover > hbox > .alltabs-endimage[muted] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-muted-hover); }
+
+menuitem:hover > hbox > .alltabs-endimage[soundplaying] {
+  list-style-image: url(chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-menu-hover); }
+
 /* Sidebar */
 #sidebar-throbber[loading="true"] {
   list-style-image: url("chrome://global/skin/icons/loading_16.png");
@@ -2798,7 +2865,7 @@ toolbarbutton.chevron > .toolbarbutton-icon {
   margin-bottom: 5px; }
 
 #sync-start-panel-subtitle {
-  margin: 0; }
+  margin-bottom: 0; }
 
 /* Status panel */
 .statuspanel-label {
@@ -2951,7 +3018,7 @@ html|*#fullscreen-exit-button {
   -moz-appearance: none;
   display: -moz-box;
   background-color: transparent;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   border-width: 0;
   min-width: 16px; }
@@ -2973,7 +3040,7 @@ html|*#fullscreen-exit-button {
 .devtools-responsiveui-toolbarbutton[type=menu] > .toolbarbutton-menu-dropmarker,
 .devtools-responsiveui-toolbarbutton[type=menu-button] > .toolbarbutton-menubutton-dropmarker {
   -moz-appearance: none !important;
-  list-style-image: url("chrome://browser/skin/devtools/dropmarker.svg");
+  list-style-image: url("chrome://devtools/skin/images/dropmarker.svg");
   -moz-box-align: center;
   padding: 0 3px; }
 
@@ -2982,19 +3049,19 @@ html|*#fullscreen-exit-button {
   margin-left: 0; }
 
 .devtools-responsiveui-close {
-  list-style-image: url("chrome://browser/skin/devtools/close.png"); }
+  list-style-image: url("chrome://devtools/skin/images/close.png"); }
 
 .devtools-responsiveui-rotate {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate.png"); }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-close {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png"); }
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png"); }
 
   .devtools-responsiveui-rotate {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-rotate@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-rotate@2x.png"); } }
 .devtools-responsiveui-touch {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch.png");
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px); }
 
 .devtools-responsiveui-touch[checked] {
@@ -3002,24 +3069,24 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-touch {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-touch@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-touch@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px); }
 
   .devtools-responsiveui-touch[checked] {
     -moz-image-region: rect(0px, 64px, 32px, 32px); } }
 .devtools-responsiveui-screenshot {
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot.png"); }
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-screenshot {
-    list-style-image: url("chrome://browser/skin/devtools/responsiveui-screenshot@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-screenshot@2x.png"); } }
 .devtools-responsiveui-resizebarV {
   width: 7px;
   height: 24px;
   cursor: ew-resize;
   transform: translate(12px, -12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer.png"); }
 
 .devtools-responsiveui-resizebarH {
   width: 24px;
@@ -3027,7 +3094,7 @@ html|*#fullscreen-exit-button {
   cursor: ns-resize;
   transform: translate(-12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer.png"); }
 
 .devtools-responsiveui-resizehandle {
   width: 16px;
@@ -3035,7 +3102,7 @@ html|*#fullscreen-exit-button {
   cursor: se-resize;
   transform: translate(12px, 12px);
   background-size: cover;
-  background-image: url("chrome://browser/skin/devtools/responsive-se-resizer.png"); }
+  background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer.png"); }
 
 /* FxOS custom mode with additional buttons and phone look'n feel */
 /* Hide devtools manual resizer */
@@ -3071,7 +3138,7 @@ html|*#fullscreen-exit-button {
   -moz-user-focus: ignore;
   width: 40px;
   height: 30px;
-  list-style-image: url("chrome://browser/skin/devtools/responsiveui-home.png"); }
+  list-style-image: url("chrome://devtools/skin/images/responsivemode/responsiveui-home.png"); }
 
 .devtools-responsiveui-sleep-button {
   -moz-user-focus: ignore;
@@ -3117,13 +3184,13 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   .devtools-responsiveui-resizebarV {
-    background-image: url("chrome://browser/skin/devtools/responsive-vertical-resizer@2x.png"); }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-vertical-resizer@2x.png"); }
 
   .devtools-responsiveui-resizebarH {
-    background-image: url("chrome://browser/skin/devtools/responsive-horizontal-resizer@2x.png"); }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-horizontal-resizer@2x.png"); }
 
   .devtools-responsiveui-resizehandle {
-    background-image: url("chrome://browser/skin/devtools/responsive-se-resizer@2x.png"); } }
+    background-image: url("chrome://devtools/skin/images/responsivemode/responsive-se-resizer@2x.png"); } }
 /* Developer toolbar */
 /* NOTE: THESE NEED TO STAY IN SYNC WITH LIGHT-THEME.CSS AND DARK-THEME.CSS.
    We are copy/pasting variables from light-theme and dark-theme,
@@ -3180,7 +3247,7 @@ html|*#fullscreen-exit-button {
 
 :root[devtoolstheme="light"] #developer-toolbar > toolbarbutton:not([checked=true]) > image,
 :root[devtoolstheme="light"] .gclitoolbar-input-node:not([focused=true])::before {
-  filter: url("chrome://browser/skin/devtools/filters.svg#invert"); }
+  filter: url("chrome://devtools/skin/images/filters.svg#invert"); }
 
 .developer-toolbar-button > .toolbarbutton-icon,
 #developer-toolbar-closebutton > .toolbarbutton-icon {
@@ -3188,7 +3255,7 @@ html|*#fullscreen-exit-button {
   height: 16px; }
 
 #developer-toolbar-toolbox-button {
-  list-style-image: url("chrome://browser/skin/devtools/toggle-tools.png");
+  list-style-image: url("chrome://devtools/skin/images/toggle-tools.png");
   -moz-image-region: rect(0px, 16px, 16px, 0px); }
 
 #developer-toolbar-toolbox-button > label {
@@ -3205,7 +3272,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-toolbox-button {
-    list-style-image: url("chrome://browser/skin/devtools/toggle-tools@2x.png");
+    list-style-image: url("chrome://devtools/skin/images/toggle-tools@2x.png");
     -moz-image-region: rect(0px, 32px, 32px, 0px); }
 
   #developer-toolbar-toolbox-button:hover {
@@ -3217,7 +3284,7 @@ html|*#fullscreen-exit-button {
   #developer-toolbar-toolbox-button[checked=true] {
     -moz-image-region: rect(0px, 128px, 32px, 96px); } }
 #developer-toolbar-closebutton {
-  list-style-image: url("chrome://browser/skin/devtools/close.png");
+  list-style-image: url("chrome://devtools/skin/images/close.png");
   -moz-appearance: none;
   border: none;
   margin: 0 4px;
@@ -3227,7 +3294,7 @@ html|*#fullscreen-exit-button {
 
 @media (min-resolution: 1.1dppx) {
   #developer-toolbar-closebutton {
-    list-style-image: url("chrome://browser/skin/devtools/close@2x.png"); } }
+    list-style-image: url("chrome://devtools/skin/images/close@2x.png"); } }
 #developer-toolbar-closebutton > .toolbarbutton-icon {
   /* XXX Buttons have padding in widget/ that we don't want here but can't override with good CSS, so we must
      use evil CSS to give the impression of smaller content */
@@ -3289,7 +3356,7 @@ html|*#gcli-output-frame {
   width: 16px;
   height: 16px;
   margin: 0 2px;
-  background-image: url("chrome://browser/skin/devtools/commandline-icon.png");
+  background-image: url("chrome://devtools/skin/images/commandline-icon.png");
   background-position: 0 center;
   background-size: 32px 16px; }
 
@@ -3298,7 +3365,7 @@ html|*#gcli-output-frame {
 
 @media (min-resolution: 1.1dppx) {
   .gclitoolbar-input-node::before {
-    background-image: url("chrome://browser/skin/devtools/commandline-icon@2x.png"); } }
+    background-image: url("chrome://devtools/skin/images/commandline-icon@2x.png"); } }
 .gclitoolbar-input-node > .textbox-input-box > html|*.textbox-input::-moz-selection {
   background-color: var(--selection-background);
   color: var(--selection-color);
@@ -3734,6 +3801,12 @@ toolbar[brighttext] #downloads-indicator-counter {
 chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   transform: none; }
 
+chatbox[src^="about:loopconversation#"] .chat-minimize-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#minimize-white"); }
+
+chatbox[src^="about:loopconversation#"] .chat-swap-button {
+  list-style-image: url("chrome://browser/skin/social/chat-icons.svg#expand-white"); }
+
 .chat-loop-hangup {
   list-style-image: url("chrome://browser/skin/social/chat-icons.svg#exit-white");
   background-color: #d13f1a;
@@ -3755,6 +3828,9 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
   text-shadow: none;
   cursor: inherit; }
 
+chatbox[src^="about:loopconversation#"] .chat-title {
+  color: white; }
+
 .chat-titlebar {
   height: 26px;
   min-height: 26px;
@@ -3771,6 +3847,10 @@ chatbar > chatbox > .chat-titlebar > .chat-swap-button {
 .chat-titlebar[selected] {
   background-color: #f0f0f0; }
 
+chatbox[src^="about:loopconversation#"] > .chat-titlebar {
+  background-color: #00a9dc;
+  border-color: #00a9dc; }
+
 .chat-titlebar > .notification-anchor-icon {
   margin-left: 2px;
   margin-right: 2px; }
@@ -4627,5 +4707,62 @@ notification.heartbeat {
   -moz-padding-end: 0 !important;
   -moz-margin-end: 0 !important; }
 
-.browser-action-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0; }
+.browser-extension-panel > .panel-arrowcontainer > .panel-arrowcontent {
+  padding: 0;
+  overflow: hidden; }
+
+/* User Context UI browser styles */
+#menu_newUserContextTabPersonal {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg"); }
+
+#menu_newUserContextTabWork {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg"); }
+
+#menu_newUserContextTabBanking {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg"); }
+
+#menu_newUserContextTabShopping {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg"); }
+
+/* URL Bar Decoration */
+#userContext-indicator {
+  height: 16px;
+  width: 16px; }
+
+#userContext-label {
+  margin-inline-end: 3px;
+  color: #909090; }
+
+#userContext-icons:not([usercontextid]) {
+  display: none; }
+
+#userContext-icons {
+  -moz-box-align: center; }
+
+/* Personal User Context */
+#userContext-icons[usercontextid="1"] > #userContext-label {
+  color: #00a7e0; }
+
+#userContext-icons[usercontextid="1"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/personal.svg"); }
+
+/* Work User Context */
+#userContext-icons[usercontextid="2"] > #userContext-label {
+  color: #f89c24; }
+
+#userContext-icons[usercontextid="2"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/work.svg"); }
+
+/* Banking User Context */
+#userContext-icons[usercontextid="3"] > #userContext-label {
+  color: #7dc14c; }
+
+#userContext-icons[usercontextid="3"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/banking.svg"); }
+
+/* Shopping User Context */
+#userContext-icons[usercontextid="4"] > #userContext-label {
+  color: #ee5195; }
+
+#userContext-icons[usercontextid="4"] > #userContext-indicator {
+  list-style-image: url("chrome://browser/skin/usercontext/shopping.svg"); }
diff --git a/arc-firefox-theme/chrome/browser/search-engine-placeholder@2x.png b/arc-firefox-theme/chrome/browser/search-engine-placeholder@2x.png
new file mode 100644
index 0000000..1565fc5
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/search-engine-placeholder@2x.png
diff --git a/arc-firefox-theme/chrome/browser/search-indicator-badge-add@2x.png b/arc-firefox-theme/chrome/browser/search-indicator-badge-add@2x.png
new file mode 100644
index 0000000..8105624
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/search-indicator-badge-add@2x.png
diff --git a/arc-firefox-theme/chrome/browser/search-indicator@2x.png b/arc-firefox-theme/chrome/browser/search-indicator@2x.png
new file mode 100644
index 0000000..2722c16
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/search-indicator@2x.png
diff --git a/arc-firefox-theme/chrome/browser/searchbar.css b/arc-firefox-theme/chrome/browser/searchbar.css
index b026cdb..67eaa5c 100644
--- a/arc-firefox-theme/chrome/browser/searchbar.css
+++ b/arc-firefox-theme/chrome/browser/searchbar.css
@@ -54,9 +54,6 @@ menuitem[cmd="cmd_clearhistory"][disabled] {
   list-style-image: url("moz-icon://stock/gtk-clear?size=menu&state=disabled");
 }
 
-
-
-
 .searchbar-search-button-container {
   -moz-box-align: center;
 }
@@ -88,19 +85,18 @@ menuitem[cmd="cmd_clearhistory"][disabled] {
 }
 
 .search-panel-current-engine {
-  border-bottom: 1px solid #ccc;
+  border-bottom: none;
+}
+
+.search-panel-tree {
+  border-top: 1px solid #ccc !important;
 }
 
 .search-panel-header {
   font-weight: normal;
-  background-color: rgb(245, 245, 245);
-  border-top: 1px solid #ccc;
+  border-top: 1px solid rgba(0, 0, 0, 0.2);
   padding: 3px 5px;
-  color: #666;
-}
-
-.search-panel-tree[collapsed=true] + .search-panel-header {
-  border-top: none;
+  color: MenuText;
 }
 
 .search-panel-header > label {
@@ -113,12 +109,12 @@ menuitem[cmd="cmd_clearhistory"][disabled] {
 }
 
 .search-panel-input-value {
-  color: black;
+  color: Highlight;
 }
 
 .search-panel-one-offs {
   margin: 0 -1px !important;
-  border-top: 1px solid #ccc;
+  border-top: 1px solid rgba(0, 0, 0, 0.2);
 }
 
 .searchbar-engine-one-off-item {
@@ -130,14 +126,14 @@ menuitem[cmd="cmd_clearhistory"][disabled] {
   margin: 0 0;
   padding: 0 0;
   background: none;
-  background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3gofECQNNVW2/AAAABBJREFUGFdjOHPmzH8GehEA/KpKg9YTf4AAAAAASUVORK5CYII=');
+  background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAABmJLR0QA/wD/AP+gvaeTAAAAFElEQVQI12NgYGAwZmJgYGCgBwEAHpIAXs+dj/cAAAAASUVORK5CYII=');
   background-repeat: no-repeat;
   background-position: right center;
 }
 
 .searchbar-engine-one-off-item:not(.last-row) {
   box-sizing: content-box;
-  border-bottom: 1px solid #ccc;
+  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
 }
 
 .searchbar-engine-one-off-item.last-of-row {
@@ -178,7 +174,7 @@ menuitem[cmd="cmd_clearhistory"][disabled] {
 }
 
 .addengine-item:first-of-type {
-  border-top: 1px solid #ccc;
+  border-top: 1px solid rgba(0, 0, 0, 0.2);
 }
 
 .addengine-item[selected] {
@@ -231,13 +227,15 @@ menuitem[cmd="cmd_clearhistory"][disabled] {
 
 .search-setting-button {
   -moz-appearance: none;
+  background-color: Menu;
   border: none;
-  border-top: 1px solid #ccc;
+  border-top: 1px solid rgba(0, 0, 0, 0.2);
   margin: 0;
   min-height: 32px;
 }
 
 .search-setting-button[selected] {
-  background-color: #d3d3d3;
+  background-color: Highlight;
+  color: HighlightText;
   border-top-color: #bdbebe;
 }
diff --git a/arc-firefox-theme/chrome/browser/social/chat-icons.svg b/arc-firefox-theme/chrome/browser/social/chat-icons.svg
index 766b974..c9b3ebf 100644
--- a/arc-firefox-theme/chrome/browser/social/chat-icons.svg
+++ b/arc-firefox-theme/chrome/browser/social/chat-icons.svg
@@ -42,8 +42,10 @@
   <use id="expand-active" xlink:href="#expand-shape"/>
   <use id="expand-disabled" xlink:href="#expand-shape"/>
   <use id="expand-hover" xlink:href="#expand-shape"/>
+  <use id="expand-white" xlink:href="#expand-shape"/>
   <use id="minimize" xlink:href="#minimize-shape"/>
   <use id="minimize-active" xlink:href="#minimize-shape"/>
   <use id="minimize-disabled" xlink:href="#minimize-shape"/>
   <use id="minimize-hover" xlink:href="#minimize-shape"/>
+  <use id="minimize-white" xlink:href="#minimize-shape"/>
 </svg>
diff --git a/arc-firefox-theme/chrome/browser/tabbrowser/tab-audio.svg b/arc-firefox-theme/chrome/browser/tabbrowser/tab-audio.svg
index e62a69f..aeb3e80 100644
--- a/arc-firefox-theme/chrome/browser/tabbrowser/tab-audio.svg
+++ b/arc-firefox-theme/chrome/browser/tabbrowser/tab-audio.svg
@@ -35,6 +35,13 @@
       fill-opacity: .5;
     }
 
+    .icon.menu {
+      fill: MenuText;
+    }
+    .icon.menu.hover {
+      fill: -moz-menuhovertext;
+    }
+
     .icon.backgroundTab,
     .icon.backgroundTab.hover,
     .icon.backgroundTab.pressed {
@@ -84,4 +91,9 @@
     <path d="M12.5,3.4L9,6.3V2L5.2,5H4C2.9,5,2,5.9,2,7v2c0,0.9,0.6,1.6,1.4,1.9l-1.9,1.5l1,1.2l11-9L12.5,3.4z M9,14v-4l-2.5,2L9,14z"/>
   </g>
 
+  <path id="tab-audio-menu" class="icon menu" d="M4,5C2.9,5,2,5.9,2,7v2c0,1.1,0.9,2,2,2h1.2L9,14V2L5.2,5H4z M11,8c0-0.6-0.4-1-1-1v2C10.6,9,11,8.6,11,8z M13,8 c0-1.4-1-2.6-2.3-2.9L10.4,6C11.3,6.2,12,7,12,8s-0.7,1.8-1.6,2l0.4,0.9C12,10.6,13,9.4,13,8z M11.4,3.2l-0.4,0.9 C12.8,4.6,14,6.2,14,8s-1.2,3.4-2.9,3.8l0.4,0.9C13.5,12.2,15,10.3,15,8S13.5,3.8,11.4,3.2z"/>
+  <path id="tab-audio-menu-muted" class="icon menu" d="M12.5,3.4L9,6.3V2L5.2,5H4C2.9,5,2,5.9,2,7v2c0,0.9,0.6,1.6,1.4,1.9l-1.9,1.5l1,1.2l11-9L12.5,3.4z M9,14v-4l-2.5,2L9,14z"/>
+  <path id="tab-audio-menu-hover" class="icon menu hover" d="M4,5C2.9,5,2,5.9,2,7v2c0,1.1,0.9,2,2,2h1.2L9,14V2L5.2,5H4z M11,8c0-0.6-0.4-1-1-1v2C10.6,9,11,8.6,11,8z M13,8 c0-1.4-1-2.6-2.3-2.9L10.4,6C11.3,6.2,12,7,12,8s-0.7,1.8-1.6,2l0.4,0.9C12,10.6,13,9.4,13,8z M11.4,3.2l-0.4,0.9 C12.8,4.6,14,6.2,14,8s-1.2,3.4-2.9,3.8l0.4,0.9C13.5,12.2,15,10.3,15,8S13.5,3.8,11.4,3.2z"/>
+  <path id="tab-audio-menu-muted-hover" class="icon menu hover" d="M12.5,3.4L9,6.3V2L5.2,5H4C2.9,5,2,5.9,2,7v2c0,0.9,0.6,1.6,1.4,1.9l-1.9,1.5l1,1.2l11-9L12.5,3.4z M9,14v-4l-2.5,2L9,14z"/>
+
 </svg>
diff --git a/arc-firefox-theme/chrome/browser/tabbrowser/tab-selected-end.svg b/arc-firefox-theme/chrome/browser/tabbrowser/tab-selected-end.svg
index 72c2544..5d0d0a2 100644
--- a/arc-firefox-theme/chrome/browser/tabbrowser/tab-selected-end.svg
+++ b/arc-firefox-theme/chrome/browser/tabbrowser/tab-selected-end.svg
@@ -11,7 +11,7 @@
 
       #tab-background-fill {
         background-color: -moz-dialog;
-        background-image: linear-gradient(transparent 0px, transparent 2px, hsla(0,0%,100%,0.35) 2px, hsla(0,0%,100%,0.35) 3px, hsla(0,0%,100%,0.65) 3px, hsla(0,0%,100%,0.65) 4px, rgba(255,255,255,.3));
+        background-image: linear-gradient(transparent 2px, rgba(255,255,255,.4) 2px, rgba(255,255,255,.4));
         background-repeat: no-repeat;
         height: 100%;
         width: 100%;
diff --git a/arc-firefox-theme/chrome/browser/tabbrowser/tab-selected-start.svg b/arc-firefox-theme/chrome/browser/tabbrowser/tab-selected-start.svg
index 2b8845e..6f2f86e 100644
--- a/arc-firefox-theme/chrome/browser/tabbrowser/tab-selected-start.svg
+++ b/arc-firefox-theme/chrome/browser/tabbrowser/tab-selected-start.svg
@@ -11,7 +11,7 @@
 
       #tab-background-fill {
         background-color: -moz-dialog;
-        background-image: linear-gradient(transparent 0px, transparent 2px, hsla(0,0%,100%,0.35) 2px, hsla(0,0%,100%,0.35) 3px, hsla(0,0%,100%,0.65) 3px, hsla(0,0%,100%,0.65) 4px, rgba(255,255,255,.3));
+        background-image: linear-gradient(transparent 2px, rgba(255,255,255,.4) 2px, rgba(255,255,255,.4));
         background-repeat: no-repeat;
         height: 100%;
         width: 100%;
diff --git a/arc-firefox-theme/chrome/browser/tabview/tabview.css b/arc-firefox-theme/chrome/browser/tabview/tabview.css
index 648b36e..6ad5b43 100644
--- a/arc-firefox-theme/chrome/browser/tabview/tabview.css
+++ b/arc-firefox-theme/chrome/browser/tabview/tabview.css
@@ -564,7 +564,7 @@ html[dir=rtl] .iq-resizable-se {
 
 #search{
   width: 100%;
-  height: 100%;
+  height: calc(100% - 1.7em - 20px); /* leave room for banner */
 }
 
 #searchbox{
diff --git a/arc-firefox-theme/chrome/browser/theme-switcher-icon@2x.png b/arc-firefox-theme/chrome/browser/theme-switcher-icon@2x.png
new file mode 100644
index 0000000..286adfe
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/theme-switcher-icon@2x.png
diff --git a/arc-firefox-theme/chrome/browser/undoCloseTab@2x.png b/arc-firefox-theme/chrome/browser/undoCloseTab@2x.png
new file mode 100644
index 0000000..4854c56
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/undoCloseTab@2x.png
diff --git a/arc-firefox-theme/chrome/browser/usercontext/banking.svg b/arc-firefox-theme/chrome/browser/usercontext/banking.svg
new file mode 100644
index 0000000..a1e20d8
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/usercontext/banking.svg
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="32" height="32" viewBox="0 0 32 32">
+  <path fill="#7dc14c" d="M17.3857868,14.0527919 C14.2304569,13.0862944 13.4913706,12.4609137 13.4913706,11.0964467 C13.4913706,9.61827411 14.7137056,8.85076142 16.4192893,8.85076142 C17.9827411,8.85076142 19.3187817,9.33401015 20.5979695,10.4994924 L22.4456853,8.42436548 C21.1664975,7.20203046 19.3187819,6.26535905 17,6.00952148 L17,2 L15,2 L15,6.00952148 C12.3827412,6.43591742 9.76751269,8.53807107 9.76751269,11.3238579 C9.76751269,14.1664975 11.4730964,15.786802 15.4812183,17.0091371 C18.4375635,17.9187817 19.2335025,18.6294416 19.2335025,20.2213198 C19.2335025,22.0690355 17.7553299,23.035533 15.7370558,23.035533 C13.7756345,23.035533 12.2406091,22.3248731 10.9329949,21.1025381 L9,23.2345178 C10.4213198,24.6274112 12.8659899,25.8324934 15,26.0030518 L15,30 L17,30 L17,26.0030518 C20.7116753,25.4060974 22.9857868,22.893401 22.9857868,20.022335 C22.9857868,16.4690355 20.7116751,15.1045685 17.3857868,14.0527919 Z"/>
+</svg>
\ No newline at end of file
diff --git a/arc-firefox-theme/chrome/browser/usercontext/personal.svg b/arc-firefox-theme/chrome/browser/usercontext/personal.svg
new file mode 100644
index 0000000..861b40b
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/usercontext/personal.svg
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="32" height="32" viewBox="0 0 32 32">
+  <path fill="#00a7e0" d="M7.17741905,12 C7.10965537,12 7.041327,11.9953181 6.97243393,11.985018 C6.33263187,11.8918489 5.90515601,11.3862071 6.01809547,10.8552833 C7.41798011,4.26321358 12.2613889,2.57493207 15.0238882,2.15590491 C19.6448063,1.45690206 24.3408291,3.21541158 25.8344535,5.29743816 C26.1664955,5.76047488 25.9835336,6.35881757 25.4244832,6.63364321 C24.8654329,6.9098734 24.1437497,6.75583996 23.8122724,6.29327142 C22.8923805,5.01043967 19.1749781,3.51130562 15.4479759,4.07406612 C12.8080159,4.474834 9.43056132,6.03623689 8.33561323,11.1942506 C8.23453242,11.666651 7.73816348,12 7.17741905,12 Z M16.63127,26 C16.1452186,26 15.6509104,25.9658335 15.147795,25.8938767 C10.637921,25.257137 6.71207921,21.8114952 6.01575422,17.8807924 C5.91171832,17.2932317 6.33391695,16.7382846 6.95813239,16.6404441 C7.58454965,16.5343208 8.17298555,16.9406954 8.27757192,17.5272206 C8.80876054,20.5255916 11.9766264,23.26409 15.4885263,23.7610576 C17.3975027,24.02766 20.959494,23.8221432 23.3220449,19.3789425 C24.4625867,17.2331815 23.0049831,11.881462 19.9521622,9.34692739 C18.2380468,7.92384005 16.4573263,7.76905536 14.6628445,8.89499751 C13.26469,9.77142052 11.8070864,12.2857658 11.8665355,14.6287608 C11.9127737,16.4835887 12.8386382,17.9325598 14.6171568,18.9363308 C15.2210054,19.2764429 16.9411759,19.4933486 17.9424527,18.8296898 C18.7257495,18.3104622 18.9591422,17.2761485 18.6365758,15.7583267 C18.3822659,14.5650869 17.2219077,12.4452096 16.6664991,12.3711821 C16.6692513,12.3722175 16.4666841,12.4312324 16.1276041,12.9095636 C15.8545786,13.2936782 15.58981,14.7297074 15.9476054,15.3581643 C16.0142104,15.4761941 16.0725586,15.5465978 16.3202632,15.5465978 C16.9532859,15.5465978 17.46686,16.0290705 17.46686,16.6249139 C17.46686,17.2207573 16.9543868,17.7042653 16.3213641,17.7042653 C15.2644914,17.7042653 14.4140391,17.2336992 13.9268868,16.3774655 C13.1083609,14.9388479 13.5536787,12.6548678 14.2202791,11.7137354 C15.2540327,10.2564816 16.3631986,10.1151564 17.1123672,10.2564816 C19.7066595,10.7389543 20.8763754,15.2908666 20.8857331,15.3359043 C21.5303153,18.3648181 20.3594985,19.8665919 19.264094,20.593407 C17.4151172,21.8192603 14.6920186,21.493643 13.4380832,20.7859819 C10.3280151,19.0310652 9.62013053,16.497566 9.5744428,14.6805283 C9.49022326,11.3643051 11.4779146,8.30018945 13.391845,7.10021984 C16.0417332,5.43848454 18.9877658,5.66781436 21.4714167,7.72919442 C25.1176276,10.7565552 27.0871539,17.1229168 25.3746898,20.3433702 C23.4326862,23.9950465 20.2983981,26 16.63127,26 Z M16.0845157,30 C14.9348455,30 13.9050564,29.8557557 13.0394288,29.6610017 C10.2114238,29.0257442 7.58700058,27.4599412 6.18892823,25.5735955 C5.84440518,25.1078371 5.98426642,24.4803503 6.50105099,24.1700066 C7.01675554,23.8596629 7.71552172,23.986423 8.06112477,24.4507244 C9.89498097,26.9252176 15.9397944,29.9781448 22.2508301,26.1937972 C22.7676147,25.8844249 23.4658409,26.0087566 23.8109039,26.474515 C24.155427,26.9397877 24.0161057,27.5672745 23.4993212,27.8776182 C20.7987573,29.4963593 18.2315746,30 16.0845157,30 Z"/>
+</svg>
\ No newline at end of file
diff --git a/arc-firefox-theme/chrome/browser/usercontext/shopping.svg b/arc-firefox-theme/chrome/browser/usercontext/shopping.svg
new file mode 100644
index 0000000..e74e16d
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/usercontext/shopping.svg
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="32" height="32" viewBox="0 0 32 32">
+  <path fill="#ee5195" fill-rule="evenodd" d="M20.8195396,14 L15.1804604,14 L15.1804604,14 L15.8471271,18 L20.1528729,18 L20.8195396,14 Z M22.8471271,14 L27.6125741,14 L27.6125741,14 L26.2792408,18 L22.1804604,18 L22.8471271,14 Z M21.1528729,12 L14.8471271,12 L14.8471271,12 L14.1804604,8 L21.8195396,8 L21.1528729,12 Z M23.1804604,12 L28.2792408,12 L28.2792408,12 L29.6125741,8 L23.8471271,8 L23.1804604,12 Z M13.1528729,14 L8.47703296,14 L10.077033,18 L10.077033,18 L13.8195396,18 L13.1528729,14 Z M12.8195396,12 L7.67703296,12 L6.07703296,8 L12.1528729,8 L12.8195396,12 L12.8195396,12 Z M31.7207592,8 L32,8 L32,6 L31,6 L5.27703296,6 L5.27703296,6 L4,2.8074176 L4,2 L3,2 L1,2 L0,2 L0,4 L1,4 L2.32296704,4 L9.78931928,22.6658806 L9.78931928,22.6658806 C8.71085924,23.3823847 8,24.6081773 8,26 C8,28.209139 9.790861,30 12,30 C14.209139,30 16,28.209139 16,26 C16,25.2714257 15.8052114,24.5883467 15.4648712,24 L22.5351288,24 C22.1947886,24.5883467 22,25.2714257 22,26 C22,28.209139 23.790861,30 26,30 C28.209139,30 30,28.209139 30,26 C30,23.790861 28.209139,22 26,22 L11.677033,22 L10.877033,20 L27,20 L28,20 L28,19.1622777 L31.7207592,8 L31.7207592,8 Z M26,28 C27.1045695,28 28,27.1045695 28,26 C28,24.8954305 27.1045695,24 26,24 C24.8954305,24 24,24.8954305 24,26 C24,27.1045695 24.8954305,28 26,28 Z M12,28 C13.1045695,28 14,27.1045695 14,26 C14,24.8954305 13.1045695,24 12,24 C10.8954305,24 10,24.8954305 10,26 C10,27.1045695 10.8954305,28 12,28 Z"/>
+</svg>
\ No newline at end of file
diff --git a/arc-firefox-theme/chrome/browser/usercontext/work.svg b/arc-firefox-theme/chrome/browser/usercontext/work.svg
new file mode 100644
index 0000000..782ad00
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/usercontext/work.svg
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="32" height="32" viewBox="0 0 32 32">
+  <path fill="#f89c24" fill-rule="evenodd" d="M22,9.99887085 L21.635468,10 L29.0034652,10 C29.5538362,10 30,10.4449463 30,10.9933977 L30,27.0066023 C30,27.5552407 29.5601869,28 29.0034652,28 L2.99653482,28 C2.44616384,28 2,27.5550537 2,27.0066023 L2,10.9933977 C2,10.4447593 2.43981314,10 2.99653482,10 L8,10 L8,7.99922997 C8,5.79051625 10.0426627,4 12.5635454,4 L19.4364546,4 C21.9568311,4 24,5.79246765 24,7.99922997 L24,9.99267578 L22,9.99887085 L22,10 L10,10 L10,7.99922997 C10,6.89421235 11.0713286,6 12.3917227,6 L19.6082773,6 C20.9273761,6 22,6.89552665 22,7.99922997 L22,9.99887085 Z"/>
+</svg>
\ No newline at end of file
diff --git a/arc-firefox-theme/chrome/browser/web-notifications-icon.svg b/arc-firefox-theme/chrome/browser/web-notifications-icon.svg
new file mode 100644
index 0000000..f7186c7
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/web-notifications-icon.svg
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid" width="64" height="64" viewBox="0 0 64 64">
+  <defs>
+    <style>
+      .icon {
+        fill: #a6a6a6;
+        fill-rule: evenodd;
+      }
+    </style>
+  </defs>
+  <path d="M57,48 L46,48 L46,60.016 L32.482,48 L7,48 C5.343,48 4,46.657 4,45 L4,11.031 C4,9.374 5.343,8.031 7,8.031 L57,8.031 C58.657,8.031 60,9.374 60,11.031 L60,45 C60,46.657 58.657,48 57,48 ZM36,16.031 C36,14.927 35.105,14.031 34,14.031 L30,14.031 C28.895,14.031 28,14.927 28,16.031 L28,30.031 C28,31.136 28.895,32.031 30,32.031 L34,32.031 C35.105,32.031 36,31.136 36,30.031 L36,16.031 ZM36,37.5 C36,36.672 35.328,36 34.5,36 L29.5,36 C28.672,36 28,36.672 28,37.5 L28,40.5 C28,41.328 28.672,42 29.5,42 L34.5,42 C35.328,42 36,41.328 36,40.5 L36,37.5 Z" class="icon"/>
+</svg>
diff --git a/arc-firefox-theme/chrome/browser/web-notifications-tray.svg b/arc-firefox-theme/chrome/browser/web-notifications-tray.svg
new file mode 100644
index 0000000..314026a
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/web-notifications-tray.svg
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="48" height="16" viewBox="0 0 96 32">
+  <defs>
+    <style>
+      .style-icon-notification {
+        fill: #666666;
+      }
+      .style-icon-notification.hover {
+        fill: #808080;
+      }
+      .style-icon-notification.active {
+        fill: #4d4d4d;
+      }
+    </style>
+    <path id="shape-notifcations-push" d="M27,23.969 L24,23.969 L24,29.977 L17.241,23.969 L5,23.969 C3.343,23.969 2,22.626 2,20.969 L2,6.969 C2,5.312 3.343,3.969 5,3.969 L27,3.969 C28.657,3.969 30,5.312 30,6.969 L30,20.969 C30,22.626 28.657,23.969 27,23.969 ZM18,8.969 C18,7.864 17.105,6.969 16,6.969 C14.895,6.969 14,7.864 14,8.969 L14,13.969 C14,15.073 14.895,15.969 16,15.969 C17.105,15.969 18,15.073 18,13.969 L18,8.969 ZM16.5,17.969 L15.5,17.969 C14.672,17.969 14,18.640 14,19.469 C14,20.297 14.672,20.969 15.5,20.969 L16.5,20.969 C17.328,20.969 18,20.297 18,19.469 C18,18.640 17.328,17.969 16.5,17.969 Z"/>
+  </defs>
+  <use xlink:href="#shape-notifcations-push" class="style-icon-notification"/>
+  <use xlink:href="#shape-notifcations-push" transform="translate(32)" class="style-icon-notification hover"/>
+  <use xlink:href="#shape-notifcations-push" transform="translate(64)" class="style-icon-notification active"/>
+</svg>