DevTools: teach TabbedPane.setTabIcon to accept UI.Icon instances

third_party/WebKit/Source/devtools/front_end/ui/tabbedPane.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 55 matching lines @@
     pointer-events: none;
     margin-left: 5px;
     position: relative;
 }
 
 .tabbed-pane-header-contents > * {
     pointer-events: initial;
 }
 
 .tabbed-pane-header-tab-icon {
-    margin-right: 2px;
+    margin-right: 6px;

[lushnikov, 2016/12/20 05:36:05]

6px = 2px (old) + 4px (from dt-label)

 }
 
 .tabbed-pane-header-tab {
     float: left;
     margin-top: 2px;
     padding: 2px 4px 2px 4px;
     height: 24px;
     border: 1px solid transparent;
     border-bottom: none;
     line-height: 15px;
@@ skipping 193 matching lines @@
 
 .tabbed-pane-left-toolbar {
     margin-right: -4px;
     flex: none;
 }
 
 .tabbed-pane-right-toolbar {
     margin-left: -4px;
     flex: none;
 }