update to 42.0b1

20 files changed, 118 insertions, 224 deletions

diff --git a/arc-firefox-theme/chrome/browser/devtools/canvasdebugger.css b/arc-firefox-theme/chrome/browser/devtools/canvasdebugger.css
index 69e847c..a749260 100644
--- a/arc-firefox-theme/chrome/browser/devtools/canvasdebugger.css
+++ b/arc-firefox-theme/chrome/browser/devtools/canvasdebugger.css
@@ -1,8 +1,4 @@
 /* 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/. */
-
-/* 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/. */
 
diff --git a/arc-firefox-theme/chrome/browser/devtools/computedview.css b/arc-firefox-theme/chrome/browser/devtools/computedview.css
index f8b0d62..f770681 100644
--- a/arc-firefox-theme/chrome/browser/devtools/computedview.css
+++ b/arc-firefox-theme/chrome/browser/devtools/computedview.css
@@ -124,11 +124,6 @@ body {
   border-bottom-width: 1px;
 }
 
-/* This rule is necessary because Templater.jsm breaks LTR TDs in RTL docs */
-.rule-text {
-  direction: ltr;
-}
-
 .matched {
   text-decoration: line-through;
 }
diff --git a/arc-firefox-theme/chrome/browser/devtools/dark-theme.css b/arc-firefox-theme/chrome/browser/devtools/dark-theme.css
index bfc0fa1..53a868f 100644
--- a/arc-firefox-theme/chrome/browser/devtools/dark-theme.css
+++ b/arc-firefox-theme/chrome/browser/devtools/dark-theme.css
@@ -138,7 +138,7 @@
 
 .cm-s-mozilla .cm-unused-line {
   text-decoration: line-through;
-  text-decoration-color: #5f88b0;
+  text-decoration-color: #0072ab;
 }
 
 .cm-s-mozilla .cm-executed-line {
@@ -953,73 +953,57 @@ div.CodeMirror span.eval-text {
   text-shadow: none;
 }
 
-.devtools-sidebar-tabs tabs > tab:first-child {
-  -moz-border-start-width: 0;
+.devtools-sidebar-tabs tabs > tab {
+  border-image: linear-gradient(transparent 15%, var(--theme-splitter-color) 15%, var(--theme-splitter-color) 85%, transparent 85%) 1 1;
 }
 
-.theme-dark .devtools-sidebar-tabs tabs > tab {
-  border-image: linear-gradient(transparent 15%, #5a6169 15%, #5a6169 85%, transparent 85%) 1 1;
+.devtools-sidebar-tabs tabs > tab[selected],
+.devtools-sidebar-tabs tabs > tab[selected] + tab {
+  border-image: linear-gradient(var(--theme-splitter-color), var(--theme-splitter-color)) 1 1;
+}
+
+.devtools-sidebar-tabs tabs > tab:first-child {
+  -moz-border-start-width: 0;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab:hover {
   background: hsla(206,37%,4%,.2);
-  border-image: linear-gradient(transparent 15%, #5a6169 15%, #5a6169 85%, transparent 85%) 1 1;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab:hover:active {
   background: hsla(206,37%,4%,.4);
-  border-image: linear-gradient(transparent 15%, #5a6169 15%, #5a6169 85%, transparent 85%) 1 1;
-}
-
-.theme-dark .devtools-sidebar-tabs tabs > tab[selected] + tab {
-  border-image: linear-gradient(#2d5b7d, #2d5b7d) 1 1;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab[selected] + tab:hover {
   background: hsla(206,37%,4%,.2);
-  border-image: linear-gradient(#2d5b7d, #2d5b7d) 1 1;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab[selected] + tab:hover:active {
   background: hsla(206,37%,4%,.4);
-  border-image: linear-gradient(#2d5b7d, #2d5b7d) 1 1;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab[selected],
 .theme-dark .devtools-sidebar-tabs tabs > tab[selected]:hover:active {
   color: var(--theme-selection-color);
   background: #1d4f73;
-  border-image: linear-gradient(#2d5b7d, #2d5b7d) 1 1;
-}
-
-.theme-light .devtools-sidebar-tabs tabs > tab {
-  border-image: linear-gradient(transparent 15%, #aaa 15%, #aaa 85%, transparent 85%) 1 1;
 }
 
 .theme-light .devtools-sidebar-tabs tabs > tab:hover {
   background: #ddd;
-  border-image: linear-gradient(transparent 15%, #aaa 15%, #aaa 85%, transparent 85%) 1 1;
 }
 
 .theme-light .devtools-sidebar-tabs tabs > tab:hover:active {
   background: #ddd;
-  border-image: linear-gradient(transparent 15%, #aaa 15%, #aaa 85%, transparent 85%) 1 1;
-}
-
-.theme-light .devtools-sidebar-tabs tabs > tab[selected] + tab {
-  border-image: linear-gradient(#aaa, #aaa);
 }
 
 .theme-light .devtools-sidebar-tabs tabs > tab[selected] + tab:hover {
   background: #ddd;
-  border-image: linear-gradient(#aaa, #aaa);
 }
 
 .theme-light .devtools-sidebar-tabs tabs > tab[selected],
 .theme-light .devtools-sidebar-tabs tabs > tab[selected]:hover:active {
   color: var(--theme-selection-color);
   background: #4c9ed9;
-  border-image: linear-gradient(#aaa, #aaa);
 }
 
 /* Toolbox - moved from toolbox.css.
diff --git a/arc-firefox-theme/chrome/browser/devtools/debugger.css b/arc-firefox-theme/chrome/browser/devtools/debugger.css
index fb7be09..97eb3b0 100644
--- a/arc-firefox-theme/chrome/browser/devtools/debugger.css
+++ b/arc-firefox-theme/chrome/browser/devtools/debugger.css
@@ -1,7 +1,3 @@
-/* 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/. */
-
 /* 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
@@ -96,6 +92,10 @@
   }
 }
 
+#toggle-promise-debugger {
+  /* TODO Bug 1186119: Add a toggle promise debugger image */
+}
+
 #sources-toolbar .devtools-toolbarbutton:not([label]) {
   -moz-image-region: rect(0px,16px,16px,0px);
 }
diff --git a/arc-firefox-theme/chrome/browser/devtools/filetype-dir-close.svg b/arc-firefox-theme/chrome/browser/devtools/filetype-dir-close.svg
index fa893f4..ae6f221 100644
--- a/arc-firefox-theme/chrome/browser/devtools/filetype-dir-close.svg
+++ b/arc-firefox-theme/chrome/browser/devtools/filetype-dir-close.svg
@@ -2,6 +2,6 @@
 <!-- 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="#000" width="16" height="16">

+<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"/>

 </svg>

diff --git a/arc-firefox-theme/chrome/browser/devtools/filetype-dir-open.svg b/arc-firefox-theme/chrome/browser/devtools/filetype-dir-open.svg
index 1faebe4..c7fafc2 100644
--- a/arc-firefox-theme/chrome/browser/devtools/filetype-dir-open.svg
+++ b/arc-firefox-theme/chrome/browser/devtools/filetype-dir-open.svg
@@ -2,6 +2,6 @@
 <!-- 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="#000" width="16" height="16">

+<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"/>

 </svg>

diff --git a/arc-firefox-theme/chrome/browser/devtools/filetype-globe.svg b/arc-firefox-theme/chrome/browser/devtools/filetype-globe.svg
index bf1fe2d..a5580b4 100644
--- a/arc-firefox-theme/chrome/browser/devtools/filetype-globe.svg
+++ b/arc-firefox-theme/chrome/browser/devtools/filetype-globe.svg
@@ -2,5 +2,5 @@
    - 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="18" height="20" viewBox="0 0 878 1024">

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+  <path fill="#0A0805" d="M438.857 73.143q119.429 0 220.286 58.857t159.714 159.714 58.857 220.286-58.857 220.286-159.714 159.714-220.286 58.857-220.286-58.857-159.714-159.714-58.857-220.286 58.857-220.286 159.714-159.714 220.286-58.857zM595.429 370.857q-1.143 0.571-5.429 5.429t-7.714 5.429q1.143 0 2.571-2.857t2.857-6.286 2-4q3.429-4 12.571-8.571 8-3.429 29.714-6.857 19.429-4.571 29.143 6.286-1.143-1.143 5.429-7.429t8.286-6.857q1.714-1.143 8.571-2.571t8.571-4.286l1.143-12.571q-6.857 0.571-10-4t-3.714-12q0 1.143-3.429 4.571 0-4-2.571-4.571t-6.571 0.571-5.143 0.571q-5.714-1.714-8.571-4.286t-4.571-9.429-2.286-8.571q-1.143-2.857-5.429-6t-5.429-6q-0.571-1.143-1.429-3.143t-1.714-3.714-2.286-3.143-3.143-1.429-4 2.857-4.286 5.714-2.571 2.857q-1.714-1.143-3.429-0.857t-2.571 0.571-2.571 1.714-2.857 2q-1.714 1.143-4.857 1.714t-4.857 1.143q8.571-2.857-0.571-6.286-5.714-2.286-9.143-1.714 5.143-2.286 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9.143t-1.429 20.286-0.571 13.429l1.143 0.571q-1.714 6.857 3.143 19.714t12.286 11.143q-7.429 1.714 11.429 24.571 3.429 4.571 4.571 5.143 1.714 1.143 6.857 4.286t8.571 5.714 5.714 6q2.286 2.857 5.714 12.857t8 13.429q-1.143 3.429 5.429 11.429t6 13.143q-0.571 0-1.429 0.571t-1.429 0.571q1.714 4 8.857 8t8.857 7.429q0.571 1.714 1.143 5.714t1.714 6.286 4.571 1.143q1.143-11.429-13.714-35.429-8.571-14.286-9.714-16.571-1.714-2.857-3.143-8.857t-2.571-8.286q1.143 0 3.429 0.857t4.857 2 4.286 2.286 1.143 1.714q-1.714 4 1.143 10t6.857 10.571 9.714 10.857 6.857 7.429q3.429 3.429 8 11.143t0 7.714q5.143 0 11.429 5.714t9.714 11.429q2.857 4.571 4.571 14.857t2.857 13.714q1.143 4 4.857 7.714t7.143 5.429l9.143 4.571t7.429 4q2.857 1.143 10.571 6t12.286 6.571q5.714 2.286 9.143 2.286t8.286-1.429 7.714-2q8.571-1.143 16.571 8.571t12 12q20.571 10.857 31.429 6.286-1.143 0.571 0.286 4.286t4.571 8.857 5.143 8.286 3.143 4.857q2.857 3.429 10.286 8.571t10.286 8.571q3.429-2.286 4-5.143-1.714 4.571 4 11.429t10.286 5.714q8-1.714 8-18.286-17.714 8.571-28-10.286 0-0.571-1.429-3.143t-2.286-4.857-1.429-4.857 0-4.286 2.857-1.714q5.143 0 5.714-2t-1.143-7.143-2.286-7.429q-0.571-4.571-6.286-11.429t-6.857-8.571q-2.857 5.143-9.143 4.571t-9.143-5.143q0 0.571-0.857 3.143t-0.857 3.714q-7.429 0-8.571-0.571 0.571-1.714 1.429-10t2-12.857q0.571-2.286 3.143-6.857t4.286-8.286 2.286-7.143-2.571-5.429-10-1.429q-10.857 0.571-14.857 11.429-0.571 1.714-1.714 6t-2.857 6.571-5.143 4q-4 1.714-13.714 1.143t-13.714-2.857q-7.429-4.571-12.857-16.571t-5.429-21.143q0-5.714 1.429-15.143t1.714-14.286-3.143-14q1.714-1.143 5.143-5.429t5.714-6q1.143-0.571 2.571-0.857t2.571 0 2.286-0.857 1.714-3.429q-0.571-0.571-2.286-1.714-1.714-1.714-2.286-1.714 4 1.714 16.286-0.857t15.714 0.857q8.571 6.286 12.571-1.143 0-0.571-1.429-5.429t-0.286-7.714q2.857 15.429 16.571 5.143 1.714 1.714 8.857 2.857t10 2.857q1.714 1.143 4 3.143t3.143 2.571 2.857-0.286 4.857-3.714q5.714 8 6.857 13.714 6.286 22.857 10.857 25.143 4 1.714 6.286 1.143t2.571-5.429 0-8-0.857-7.143l-0.571-4.571v-10.286l-0.571-4.571q-8.571-1.714-10.571-6.857t0.857-10.571 8.571-10.571q0.571-0.571 4.571-2t8.857-3.714 7.143-4.571q12-10.857 8.571-20 4 0 6.286-5.143-0.571 0-2.857-1.714t-4.286-2.857-2.571-1.143q5.143-2.857 1.143-9.143 2.857-1.714 4.286-6.286t4.286-5.714q5.143 6.857 12 1.143 4-4.571 0.571-9.143 2.857-4 11.714-6t10.571-5.429q4 1.143 4.571-1.143t0.571-6.857 1.714-6.857q2.286-2.857 8.571-5.143t7.429-2.857l9.714-6.286q1.714-2.286 0-2.286 10.286 1.143 17.714-6.286 5.714-6.286-3.429-11.429 1.714-3.429-1.714-5.429t-8.571-3.143q1.714-0.571 6.571-0.286t6-0.857q8.571-5.714-4-9.143-9.714-2.857-24.571 6.857zM502.286 872q117.714-20.571 200.571-108-1.714-1.714-7.143-2.571t-7.143-2q-10.286-4-13.714-4.571 0.571-4-1.429-7.429t-4.571-5.143-7.143-4.571-6.286-4q-1.143-1.143-4-3.429t-4-3.143-4.286-2.571-4.857-1.143-5.714 0.571l-1.714 0.571q-1.714 0.571-3.143 1.429t-3.143 1.714-2.286 1.714 0 1.429q-12-9.714-20.571-12.571-2.857-0.571-6.286-3.143t-6-4-5.714-0.857-6.571 4q-2.857 2.857-3.429 8.571t-1.143 7.429q-4-2.857 0-10t1.143-10.571q-1.714-3.429-6-2.571t-6.857 2.571-6.571 4.857-5.143 3.714-4.857 3.143-4.857 4.286q-1.714 2.286-3.429 6.857t-2.857 6.286q-1.143-2.286-6.571-3.714t-5.429-3.143q1.143 5.714 2.286 20t2.857 21.714q4 17.714-6.857 27.429-15.429 14.286-16.571 22.857-2.286 12.571 6.857 14.857 0 4-4.571 11.714t-4 12.286q0 3.429 1.143 9.143z"/>

 </svg>

diff --git a/arc-firefox-theme/chrome/browser/devtools/filetype-store.svg b/arc-firefox-theme/chrome/browser/devtools/filetype-store.svg
index 01d3625..c85c560 100644
--- a/arc-firefox-theme/chrome/browser/devtools/filetype-store.svg
+++ b/arc-firefox-theme/chrome/browser/devtools/filetype-store.svg
@@ -1,7 +1,7 @@
 <!-- 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">
+<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"/>
   <path d="m14.7,3.4c0-1.4-3-2.5-6.7-2.5s-6.7,1.1-6.7,2.5c0,.2 0,.3 .1,.5-.1-.3-.1-.4-.1-.4v1.5c0,0 0,2.7 6.7,2.7 6.7,0 6.8-2.7 6.8-2.7v-1.6c0,.1 0,.2-.1,.5-0-.2-0-.3-0-.5z"/>
   <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"/>
diff --git a/arc-firefox-theme/chrome/browser/devtools/filters.svg b/arc-firefox-theme/chrome/browser/devtools/filters.svg
index 1f51d32..700fdbf 100644
--- a/arc-firefox-theme/chrome/browser/devtools/filters.svg
+++ b/arc-firefox-theme/chrome/browser/devtools/filters.svg
@@ -3,20 +3,14 @@
    - 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%" >
-  <feComponentTransfer>
-    <feFuncR type="table" tableValues=".1 0"/>
-    <feFuncG type="table" tableValues=".1 0"/>
-    <feFuncB type="table" tableValues=".1 0"/>
-  </feComponentTransfer>
-</filter>
-<filter id="invert-white" x="0%" y="0%" width="100%" height="100%" >
-  <feComponentTransfer>
-    <feFuncR type="table" tableValues=".6 0"/>
-    <feFuncG type="table" tableValues=".6 0"/>
-    <feFuncB type="table" tableValues=".6 0"/>
-  </feComponentTransfer>
- </filter>
+  <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">
diff --git a/arc-firefox-theme/chrome/browser/devtools/light-theme.css b/arc-firefox-theme/chrome/browser/devtools/light-theme.css
index ea8b1fe..92515ff 100644
--- a/arc-firefox-theme/chrome/browser/devtools/light-theme.css
+++ b/arc-firefox-theme/chrome/browser/devtools/light-theme.css
@@ -28,7 +28,7 @@
 
   --theme-highlight-green: #2cbb0f;
   --theme-highlight-blue: #0088cc;
-  --theme-highlight-bluegrey: #5f88b0;
+  --theme-highlight-bluegrey: #0072ab;
   --theme-highlight-purple: #5b5fff;
   --theme-highlight-lightorange: #d97e00;
   --theme-highlight-orange: #f13c00;
@@ -951,73 +951,57 @@ div.CodeMirror span.eval-text {
   text-shadow: none;
 }
 
-.devtools-sidebar-tabs tabs > tab:first-child {
-  -moz-border-start-width: 0;
+.devtools-sidebar-tabs tabs > tab {
+  border-image: linear-gradient(transparent 15%, var(--theme-splitter-color) 15%, var(--theme-splitter-color) 85%, transparent 85%) 1 1;
 }
 
-.theme-dark .devtools-sidebar-tabs tabs > tab {
-  border-image: linear-gradient(transparent 15%, #5a6169 15%, #5a6169 85%, transparent 85%) 1 1;
+.devtools-sidebar-tabs tabs > tab[selected],
+.devtools-sidebar-tabs tabs > tab[selected] + tab {
+  border-image: linear-gradient(var(--theme-splitter-color), var(--theme-splitter-color)) 1 1;
+}
+
+.devtools-sidebar-tabs tabs > tab:first-child {
+  -moz-border-start-width: 0;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab:hover {
   background: hsla(206,37%,4%,.2);
-  border-image: linear-gradient(transparent 15%, #5a6169 15%, #5a6169 85%, transparent 85%) 1 1;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab:hover:active {
   background: hsla(206,37%,4%,.4);
-  border-image: linear-gradient(transparent 15%, #5a6169 15%, #5a6169 85%, transparent 85%) 1 1;
-}
-
-.theme-dark .devtools-sidebar-tabs tabs > tab[selected] + tab {
-  border-image: linear-gradient(#2d5b7d, #2d5b7d) 1 1;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab[selected] + tab:hover {
   background: hsla(206,37%,4%,.2);
-  border-image: linear-gradient(#2d5b7d, #2d5b7d) 1 1;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab[selected] + tab:hover:active {
   background: hsla(206,37%,4%,.4);
-  border-image: linear-gradient(#2d5b7d, #2d5b7d) 1 1;
 }
 
 .theme-dark .devtools-sidebar-tabs tabs > tab[selected],
 .theme-dark .devtools-sidebar-tabs tabs > tab[selected]:hover:active {
   color: var(--theme-selection-color);
   background: #1d4f73;
-  border-image: linear-gradient(#2d5b7d, #2d5b7d) 1 1;
-}
-
-.theme-light .devtools-sidebar-tabs tabs > tab {
-  border-image: linear-gradient(transparent 15%, #aaa 15%, #aaa 85%, transparent 85%) 1 1;
 }
 
 .theme-light .devtools-sidebar-tabs tabs > tab:hover {
   background: #ddd;
-  border-image: linear-gradient(transparent 15%, #aaa 15%, #aaa 85%, transparent 85%) 1 1;
 }
 
 .theme-light .devtools-sidebar-tabs tabs > tab:hover:active {
   background: #ddd;
-  border-image: linear-gradient(transparent 15%, #aaa 15%, #aaa 85%, transparent 85%) 1 1;
-}
-
-.theme-light .devtools-sidebar-tabs tabs > tab[selected] + tab {
-  border-image: linear-gradient(#aaa, #aaa);
 }
 
 .theme-light .devtools-sidebar-tabs tabs > tab[selected] + tab:hover {
   background: #ddd;
-  border-image: linear-gradient(#aaa, #aaa);
 }
 
 .theme-light .devtools-sidebar-tabs tabs > tab[selected],
 .theme-light .devtools-sidebar-tabs tabs > tab[selected]:hover:active {
   color: var(--theme-selection-color);
   background: #4c9ed9;
-  border-image: linear-gradient(#aaa, #aaa);
 }
 
 /* Toolbox - moved from toolbox.css.
diff --git a/arc-firefox-theme/chrome/browser/devtools/netmonitor.css b/arc-firefox-theme/chrome/browser/devtools/netmonitor.css
index 92f2efc..9448a39 100644
--- a/arc-firefox-theme/chrome/browser/devtools/netmonitor.css
+++ b/arc-firefox-theme/chrome/browser/devtools/netmonitor.css
@@ -143,31 +143,28 @@
 }
 
 .requests-security-state-icon {
+  width: 16px;
+  height: 16px;
   -moz-margin-end: 4px;
-  -moz-image-region:rect(0px, 16px, 16px, 0px);
-}
-
-.requests-security-state-icon:hover {
-  -moz-image-region: rect(0px, 32px, 16px, 16px);
 }
 
 .security-state-insecure {
-  list-style-image: url(chrome://browser/skin/identity-icons-generic.png);
+  list-style-image: url(chrome://browser/skin/identity-not-secure.svg);
 }
 
 .security-state-secure {
   cursor: pointer;
-  list-style-image: url(chrome://browser/skin/identity-icons-https.png);
+  list-style-image: url(chrome://browser/skin/identity-secure.svg);
 }
 
 .security-state-weak {
   cursor: pointer;
-  list-style-image: url(chrome://browser/skin/identity-icons-https-mixed-display.png);
+  list-style-image: url(chrome://browser/skin/identity-mixed-passive-loaded.svg);
 }
 
 .security-state-broken {
   cursor: pointer;
-  list-style-image: url(chrome://browser/skin/identity-icons-https-mixed-active.png);
+  list-style-image: url(chrome://browser/skin/identity-mixed-active-loaded.svg);
 }
 
 .requests-menu-type {
diff --git a/arc-firefox-theme/chrome/browser/devtools/performance.css b/arc-firefox-theme/chrome/browser/devtools/performance.css
index 1187fd8..8eafa36 100644
--- a/arc-firefox-theme/chrome/browser/devtools/performance.css
+++ b/arc-firefox-theme/chrome/browser/devtools/performance.css
@@ -1,7 +1,3 @@
-/* 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/. */
-
 /* 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,
@@ -225,10 +221,10 @@
   width: 4.5vw;
 }
 
-.call-tree-header[type="allocations"],
-.call-tree-cell[type="allocations"],
-.call-tree-header[type="self-allocations"],
-.call-tree-cell[type="self-allocations"] {
+.call-tree-header[type="count"],
+.call-tree-cell[type="count"],
+.call-tree-header[type="self-count"],
+.call-tree-cell[type="self-count"] {
   width: 9vw;
 }
 
diff --git a/arc-firefox-theme/chrome/browser/devtools/promisedebugger.css b/arc-firefox-theme/chrome/browser/devtools/promisedebugger.css
new file mode 100644
index 0000000..e003224
--- /dev/null
+++ b/arc-firefox-theme/chrome/browser/devtools/promisedebugger.css
@@ -0,0 +1,3 @@
+/* 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/. */
diff --git a/arc-firefox-theme/chrome/browser/devtools/ruleview.css b/arc-firefox-theme/chrome/browser/devtools/ruleview.css
index c38224c..8fad666 100644
--- a/arc-firefox-theme/chrome/browser/devtools/ruleview.css
+++ b/arc-firefox-theme/chrome/browser/devtools/ruleview.css
@@ -243,14 +243,28 @@
   border-bottom-color: hsl(0,0%,50%);
 }
 
-.ruleview-selector {
+.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;
diff --git a/arc-firefox-theme/chrome/browser/devtools/scratchpad.css b/arc-firefox-theme/chrome/browser/devtools/scratchpad.css
index 96d6f70..4c8a5d1 100644
--- a/arc-firefox-theme/chrome/browser/devtools/scratchpad.css
+++ b/arc-firefox-theme/chrome/browser/devtools/scratchpad.css
@@ -1,7 +1,3 @@
-/* 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/. */
-
 
 #scratchpad-sidebar > tabs {
   height: 0;
diff --git a/arc-firefox-theme/chrome/browser/devtools/shadereditor.css b/arc-firefox-theme/chrome/browser/devtools/shadereditor.css
index c63a4c6..9ba9ff8 100644
--- a/arc-firefox-theme/chrome/browser/devtools/shadereditor.css
+++ b/arc-firefox-theme/chrome/browser/devtools/shadereditor.css
@@ -1,8 +1,4 @@
 /* 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/. */
-
-/* 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/. */
 
diff --git a/arc-firefox-theme/chrome/browser/devtools/splitview.css b/arc-firefox-theme/chrome/browser/devtools/splitview.css
index 9710c38..902fedb 100644
--- a/arc-firefox-theme/chrome/browser/devtools/splitview.css
+++ b/arc-firefox-theme/chrome/browser/devtools/splitview.css
@@ -133,20 +133,3 @@
   min-width: 48px;
   min-height: 0;
 }
-
-
-/* Resizers */
-
-.splitview-portrait-resizer {
-  -moz-appearance: none;
-  background: linear-gradient(black 1px, rgba(255,255,255,0.2) 1px),
-              linear-gradient(hsl(210,11%,36%), hsl(210,11%,18%));
-  height: 12px;
-  background-size: 10px 2px, 100% 12px;
-  background-clip: content-box, border-box;
-  background-repeat: repeat-y, no-repeat;
-  background-position: center center;
-  padding: 2px 0;
-  border-top: 1px solid hsla(210,8%,5%,.5);
-  border-bottom: 1px solid hsla(210,8%,5%,.5);
-}
diff --git a/arc-firefox-theme/chrome/browser/devtools/storage.css b/arc-firefox-theme/chrome/browser/devtools/storage.css
index 5f6d78e..a5a897e 100644
--- a/arc-firefox-theme/chrome/browser/devtools/storage.css
+++ b/arc-firefox-theme/chrome/browser/devtools/storage.css
@@ -10,8 +10,8 @@
   overflow: auto;
 }
 
-.theme-dark #storage-tree {
-  background: #343c45; /* Toolbars */
+#storage-tree {
+  background: var(--theme-sidebar-background);
 }
 
 #storage-tree .tree-widget-item[type="store"]:after {
diff --git a/arc-firefox-theme/chrome/browser/devtools/webaudioeditor.css b/arc-firefox-theme/chrome/browser/devtools/webaudioeditor.css
index 11439a6..0d66638 100644
--- a/arc-firefox-theme/chrome/browser/devtools/webaudioeditor.css
+++ b/arc-firefox-theme/chrome/browser/devtools/webaudioeditor.css
@@ -1,8 +1,4 @@
 /* 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/. */
-
-/* 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/. */
 
diff --git a/arc-firefox-theme/chrome/browser/devtools/widgets.css b/arc-firefox-theme/chrome/browser/devtools/widgets.css
index 17a96ad..18a6757 100644
--- a/arc-firefox-theme/chrome/browser/devtools/widgets.css
+++ b/arc-firefox-theme/chrome/browser/devtools/widgets.css
@@ -7,6 +7,14 @@
  * 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/. */
 
+.theme-dark {
+  --table-splitter-color: rgba(255,255,255,0.15);
+  --table-zebra-background: rgba(255,255,255,0.05);
+}
+.theme-light {
+  --table-splitter-color: rgba(0,0,0,0.15);
+  --table-zebra-background: rgba(0,0,0,0.05);
+}
 
 /* Generic pane helpers */
 
@@ -1199,43 +1207,16 @@
   overflow: auto;
 }
 
-.theme-light .table-widget-body {
-  background: var(--theme-sidebar-background);
-}
-
-.theme-dark .table-widget-body,
-.theme-dark .table-widget-empty-text {
-  background-color: var(--theme-toolbar-background);
-}
-
-.theme-dark .table-widget-body:-moz-locale-dir(ltr) {
-  box-shadow: inset -1px 0 0 #000;
-}
-
-.theme-dark .table-widget-body:-moz-locale-dir(rtl) {
-  box-shadow: inset 1px 0 0 #000;
-}
-
-.table-widget-body:-moz-locale-dir(ltr) {
-  box-shadow: inset -1px 0 0 #aaa;
-}
-
-.table-widget-body:-moz-locale-dir(rtl) {
-  box-shadow: inset 1px 0 0 #aaa;
+.table-widget-body,
+.table-widget-empty-text {
+  background-color: var(--theme-body-background);
 }
 
 /* Column Headers */
 
-.theme-dark .table-widget-column-header,
-.theme-dark .table-widget-cell {
-  -moz-border-end: 1px solid rgba(0,0,0,0.2);
-  box-shadow: inset 1px 0 0 rgba(128,128,128,0.15);
-}
-
-.theme-light .table-widget-column-header,
-.theme-light .table-widget-cell {
-  -moz-border-end: 1px solid rgba(128,128,128,0.25);
-  box-shadow: inset 1px 0 0 transparent;
+.table-widget-column-header,
+.table-widget-cell {
+  -moz-border-end: 1px solid var(--table-splitter-color) !important;
 }
 
 /* Table widget column header colors are taken from netmonitor.inc.css to match
@@ -1246,10 +1227,8 @@
   background: rgba(0,0,0,0);
   position: sticky;
   top: 0;
-  min-height: 32px;
   width: 100%;
-  border: none;
-  padding: 8px 0 0 !important;
+  padding: 5px 0 0 !important;
   color: inherit;
   text-align: center;
   font-weight: inherit !important;
@@ -1257,27 +1236,29 @@
 }
 
 .table-widget-column-header:hover {
-  background: rgba(0,0,0,0.10);
+  background-image: linear-gradient(rgba(0,0,0,0.10), rgba(0,0,0,0.10));
 }
 
 .table-widget-column-header:hover:active {
-  background: rgba(0,0,0,0.25);
+  background-image: linear-gradient(rgba(0,0,0,0.25), rgba(0,0,0,0.25));
 }
 
 .table-widget-column-header:not(:active)[sorted] {
-  background: rgba(0,0,0,0.15);
+  background-image: linear-gradient(rgba(0,0,0,0.15), rgba(0,0,0,0.15));
 }
 
 .table-widget-column-header:not(:active)[sorted=ascending] {
-  background-image: radial-gradient(farthest-side at center top, hsla(200,100%,70%,.7), hsla(200,100%,70%,0.3));
-  background-size: 100% 1px;
-  background-repeat: no-repeat;
+  background-image: radial-gradient(farthest-side at center top, hsla(200,100%,70%,.7), hsla(200,100%,70%,0.3)),
+                    linear-gradient(rgba(0,0,0,0.15), rgba(0,0,0,0.15));
+  background-size: 100% 1px, auto;
+  background-repeat: no-repeat, repeat;
 }
 
 .table-widget-column-header:not(:active)[sorted=descending] {
-  background-image: radial-gradient(farthest-side at center bottom, hsla(200,100%,70%,.7), hsla(200,100%,70%,0.3));
-  background-size: 100% 1px;
-  background-repeat: no-repeat;
+  background-image: radial-gradient(farthest-side at center bottom, hsla(200,100%,70%,.7), hsla(200,100%,70%,0.3)),
+                    linear-gradient(rgba(0,0,0,0.15), rgba(0,0,0,0.15));
+  background-size: 100% 1px, auto;
+  background-repeat: no-repeat, repeat;
   background-position: bottom;
 }
 
@@ -1285,44 +1266,22 @@
 
 .table-widget-cell {
   width: 100%;
-  margin: -1px 0 !important;
   padding: 3px 4px;
   background-clip: padding-box;
   min-width: 100px;
   -moz-user-focus: normal;
-}
-
-.theme-dark .table-widget-cell {
-  border-top: 1px solid rgba(0,0,0,0.2);
-  border-bottom: 1px solid rgba(128,128,128,0.15);
-  color: var(--theme-selection-color);
-}
-
-.theme-dark:not(.filtering) .table-widget-cell:nth-child(odd):not(.theme-selected),
-.theme-dark .table-widget-cell:not(.theme-selected)[odd] {
-  background: rgba(255,255,255,0.05);
-}
-
-.theme-dark .table-widget-cell:last-of-type {
-  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.2);
-}
-
-.theme-light .table-widget-cell {
-  border-top: 1px solid rgba(128,128,128,0.15);
+  margin-bottom: -1px !important;
   border-bottom: 1px solid transparent;
-}
-
-.theme-light .table-widget-cell:not(.theme-selected) {
   color: var(--theme-body-color);
 }
 
-.theme-light:not(.filtering) .table-widget-cell:nth-child(odd):not(.theme-selected),
-.theme-light .table-widget-cell:not(.theme-selected)[odd] {
-  background: rgba(128,128,128,0.05);
+.table-widget-cell:last-child {
+  border-bottom: 1px solid var(--table-splitter-color);
 }
 
-.theme-light .table-widget-cell:last-of-type {
-  box-shadow: inset 0 -1px 0 rgba(128,128,128,0.15);
+:root:not(.filtering) .table-widget-cell:nth-child(odd):not(.theme-selected),
+.table-widget-cell:not(.theme-selected)[odd] {
+  background: var(--table-zebra-background);
 }
 
 .table-widget-cell.flash-out {
@@ -1344,10 +1303,6 @@
   margin-top: -20px !important;
 }
 
-.theme-light .table-widget-empty-text {
-  background: #F7F7F7; /* Background-Sidebar */
-}
-
 .table-widget-body:empty + .table-widget-empty-text:not([value=""]),
 .table-widget-body[empty] + .table-widget-empty-text:not([value=""]) {
   display: block;
@@ -1399,11 +1354,11 @@
 }
 
 .tree-widget-item[level="1"] {
-  font-weight: 800;
+  font-weight: 700;
 }
 
 /* Twisties */
-.tree-widget-item:before {
+.tree-widget-item::before {
   content: "";
   width: 14px;
   height: 14px;
@@ -1416,24 +1371,24 @@
   background-position: -28px -14px;
 }
 
-.tree-widget-item:-moz-locale-dir(rtl):before {
+.tree-widget-item:-moz-locale-dir(rtl)::before {
   float: right;
   transform: scaleX(-1);
 }
 
-.theme-light .tree-widget-item:before {
+.theme-light .tree-widget-item:not(.theme-selected)::before {
   background-position: 0 -14px;
 }
 
-.tree-widget-item[empty]:before {
+.tree-widget-item[empty]::before {
   background: transparent;
 }
 
-.tree-widget-item[expanded]:before {
+.tree-widget-item[expanded]::before {
   background-position: -42px -14px;
 }
 
-.theme-light .tree-widget-item[expanded]:before {
+.theme-light .tree-widget-item:not(.theme-selected)[expanded]:before {
   background-position: -14px -14px;
 }
 
@@ -1511,7 +1466,7 @@
 
 /* Custom icons for certain tree items indicating the type of the item */
 
-.tree-widget-item[type]:after {
+.tree-widget-item[type]::after {
   content: "";
   float: left;
   width: 16px;
@@ -1519,31 +1474,36 @@
   -moz-margin-end: 4px;
   background-repeat: no-repeat;
   background-size: 20px auto;
-  filter: url('filters.svg#invert');
   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 {
+.tree-widget-item:-moz-locale-dir(rtl)::after {
   float: right;
 }
 
-.theme-dark .tree-widget-item[type]:after {
-  filter: url('filters.svg#invert-white');
+.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 {
+.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 {
+.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 {
+.tree-widget-item[type="url"]::after {
   background-image: url(chrome://browser/skin/devtools/filetype-globe.svg);
   background-size: auto 18px;
   width: 18px;