DevTools: extract treeoutline triangle icons from toolbarButtonGlyphs.png

third_party/WebKit/Source/devtools/front_end/elements/elementsTreeOutline.css

 /*
  * Copyright (c) 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 .elements-disclosure {
     width: 100%;
     display: inline-block;
     line-height: normal;
@@ skipping 29 matching lines @@
 .elements-disclosure ol:focus li.selected:after {
     color: white;
 }
 
 .elements-disclosure li.parent::before {
     box-sizing: border-box;
 }
 
 .elements-disclosure li.parent::before {
     -webkit-user-select: none;
-    -webkit-mask-image: url(Images/toolbarButtonGlyphs.png);
-    -webkit-mask-size: 352px 168px;
+    -webkit-mask-image: url(Images/treeoutlineTriangles.png);
+    -webkit-mask-size: 32px 24px;
     content: "aa";
     color: transparent;
     text-shadow: none;
     margin-right: -3px;
 }
 
 .elements-disclosure li.always-parent::before {
     visibility: hidden;
 }
 
 @media (-webkit-min-device-pixel-ratio: 1.1) {
 .elements-disclosure li.parent::before {
-    -webkit-mask-image: url(Images/toolbarButtonGlyphs_2x.png);
+    -webkit-mask-image: url(Images/treeoutlineTriangles_2x.png);
 }
 } /* media */
 
 .elements-disclosure li.parent::before {
-    -webkit-mask-position: -4px -96px;
+    -webkit-mask-position: 0 0;
     background-color: rgb(110, 110, 110);
 }
 
 .elements-disclosure li .selection {
     display: none;
     z-index: -1;
 }
 
 .elements-disclosure li.hovered:not(.selected) .selection {
     display: block;
     left: 3px;
     right: 3px;
     background-color: rgba(56, 121, 217, 0.1);
     border-radius: 5px;
 }
 
 .elements-disclosure li.parent.expanded::before {
-    -webkit-mask-position: -20px -96px;
+    -webkit-mask-position: -16px 0;
 }
 
 .elements-disclosure li.selected .selection {
     display: block;
     background-color: #dadada;
 }
 
 .elements-disclosure ol {
     list-style-type: none;
     /** Keep it in sync with ElementsTreeElements.updateDecorators **/
@@ skipping 260 matching lines @@
     border-color: hsla(0,0%,0%,0.1);
 }
 
 .elements-tree-outline ol.shadow-root {
     border-color: hsla(0,0%,80%,1);
 }
 
 li.selected:not(.always-parent) + ol.children {
     border-color: hsla(216,68%,80%,1) !important;
 }