DevTools: migrate ResourcesPanel icons over to UI.Icon

third_party/WebKit/Source/devtools/front_end/resources/resourcesSidebar.css

 /*
  * Copyright 2016 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.
  */
 
 .tree-outline {
     padding-left: 0;
     color: rgb(90, 90, 90);
 }
 
 .tree-outline > ol {
     padding-bottom: 10px;
 }
 
-.icon {
-    width: 16px;
-    height: 16px;
-    margin-right: 4px;
-}
-
 .tree-outline li {
     min-height: 20px;
 }
 
 li.storage-group-list-item {
     border-top: 1px solid rgb(230, 230, 230);
     padding: 10px 8px 6px 8px;
 }
 
 li.storage-group-list-item::before {
     display: none;
 }
 
-.navigator-tree-item .icon {
-    -webkit-mask-image: url(Images/toolbarButtonGlyphs.png);
-    -webkit-mask-size: 352px 168px;
-    width: 32px;
-    height: 20px;
-    -webkit-mask-position: -224px -72px;
-    position: relative;
-    top: -2px;
-    margin-right: -3px;
-    margin-left: -9px;
+.navigator-tree-item {

[dgozman, 2017/01/30 16:47:52]

So, you mix 16x16px icons and 32x24px icons in the same tree. Does it make sense
to have 'largeicon-file-item' and 'mediumicon-file-item', using the same mask
but different positions?

[lushnikov, 2017/01/31 03:17:32]

there are two different trees in Applicaion panel: one in Frames section (it
uses 32x24 icons) and one Storage section (it uses 16x16 icons). The 16x16 icons
come from the resourceGlyphs - they have no relation to toolbarButtonGlyphs. 

I didn't follow your idea with using the same mask but different position -
could you please explain?

[dgozman, 2017/01/31 03:57:11]

Thanks for explanation.
The idea was that we can use the same glyph for medium-sized and large-sized
icon, just defining different x, y, width and height and leaving different
amount of whitespace around. This way we can replace the margins.

+    margin: -3px -7px -3px -7px;
 }
 
-@media (-webkit-min-device-pixel-ratio: 1.1) {
-.navigator-tree-item .icon {
-    -webkit-mask-image: url(Images/toolbarButtonGlyphs_2x.png);
-}
-} /* media */
-
-.navigator-file-tree-item .icon {
-    -webkit-mask-position: -224px -72px;
+.navigator-file-tree-item {
     background: linear-gradient(45deg, hsl(0, 0%, 50%), hsl(0, 0%, 70%));
 }
 
-:focus .navigator-file-tree-item.selected .icon,
-:focus .navigator-folder-tree-item.selected .icon,
-:focus .navigator-frame-tree-item.selected .icon {
-    background: white !important;
-}
-
-.navigator-folder-tree-item .icon {
-    -webkit-mask-position: -64px -120px;
+.navigator-folder-tree-item {
     background: linear-gradient(45deg, hsl(210, 82%, 65%), hsl(210, 82%, 80%));
 }
 
-.navigator-domain-tree-item .icon  {
-    -webkit-mask-position: -160px -144px;
-}
-
-.navigator-frame-tree-item .icon {
-    -webkit-mask-position: -256px -144px;
+.navigator-frame-tree-item {
     background-color: #5a5a5a;
 }
 
-.navigator-script-tree-item .icon {
+.navigator-script-tree-item {
     background: linear-gradient(45deg, hsl(48, 70%, 50%), hsl(48, 70%, 70%));
 }
 
-.navigator-stylesheet-tree-item .icon {
+.navigator-stylesheet-tree-item {
     background: linear-gradient(45deg, hsl(256, 50%, 50%), hsl(256, 50%, 70%));
 }
 
-.navigator-image-tree-item .icon,
-.navigator-font-tree-item .icon {
+.navigator-image-tree-item,
+.navigator-font-tree-item {
     background: linear-gradient(45deg, hsl(109, 33%, 50%), hsl(109, 33%, 70%));
 }
 
-.resource-tree-item .icon {
-    -webkit-mask: url(Images/resourceGlyphs.png) no-repeat 0 0;
-    -webkit-mask-size: 140px 20px;
+.resource-tree-item {
     background: rgba(90, 90, 90, .7);
 }
-
-@media (-webkit-min-device-pixel-ratio: 1.1) {
-.resource-tree-item .icon {
-    -webkit-mask-image: url(Images/resourceGlyphs_2x.png);
-}
-} /* media */
-
-:focus .resource-tree-item.selected .icon {
-    background: white !important;
-}
-
-.database-tree-item .icon {
-    -webkit-mask-position: -60px 0;
-}
-
-.table-tree-item .icon {
-    -webkit-mask-position: -80px 0;
-}
-
-:focus .service-workers-tree-item.selected .icon {
-    -webkit-filter: invert();

[dgozman, 2017/01/30 16:47:52]

Did you regress this or it just works?

[lushnikov, 2017/01/31 03:17:32]

The .service-workers-tree-item class is never used

-}
-
-.-theme-with-dark-background .service-workers-tree-item .icon,
-{
-    -webkit-filter: invert(70%);
-}
-
-.cookie-tree-item .icon {
-    -webkit-mask-position: -120px 0;
-}
-
-.manifest-tree-item .icon {
-    -webkit-mask-position: 0 0;
-}
-
-.service-worker-tree-item .icon {
-    -webkit-mask-position: -20px 0;
-}
-
-.clear-storage-tree-item .icon {
-    -webkit-mask-position: -40px 0;
-}