DevTools: convert datagrid and network waterfall sort icons to UI.Icon

third_party/WebKit/Source/devtools/front_end/elements/StylesSidebarPane.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 2109 matching lines @@
 
   /**
    * @override
    */
   oncollapse() {
     this._updateExpandElement();
   }
 
   _updateExpandElement() {
     if (this.expanded)
-      this._expandElement.setIconType('smallicon-triangle-bottom');
+      this._expandElement.setIconType('smallicon-triangle-down');
     else
       this._expandElement.setIconType('smallicon-triangle-right');
   }
 
   updateTitle() {
     this._updateState();
     this._expandElement = UI.Icon.create('smallicon-triangle-right', 'expand-icon');
 
     var propertyRenderer =
         new Elements.StylesSidebarPropertyRenderer(this._style.parentRule, this.node(), this.name, this.value);
@@ skipping 939 matching lines @@
   }
 
   /**
    * @override
    * @return {!UI.ToolbarItem}
    */
   item() {
     return this._button;
   }
 };