DevTools: eliminate ToolbarButton.setState method; cleanup toolbar.css

third_party/WebKit/Source/devtools/front_end/ui/SplitWidget.js

 /*
  * Copyright (C) 2012 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
  * notice, this list of conditions and the following disclaimer.
  *
@@ skipping 815 matching lines @@
   _onZoomChanged(event) {
     this._forceUpdateLayout();
   }
 
   /**
    * @param {string} title
    * @return {!WebInspector.ToolbarButton}
    */
   createShowHideSidebarButton(title) {
     this._showHideSidebarButtonTitle = WebInspector.UIString(title);
-    this._showHideSidebarButton = new WebInspector.ToolbarButton('', 'sidebar-toolbar-item');
+    this._showHideSidebarButton = new WebInspector.ToolbarButton('', '');
     this._showHideSidebarButton.addEventListener('click', buttonClicked.bind(this));
     this._updateShowHideSidebarButton();
 
     /**
      * @param {!WebInspector.Event} event
      * @this {WebInspector.SplitWidget}
      */
     function buttonClicked(event) {
       if (this._showMode !== WebInspector.SplitWidget.ShowMode.Both)
         this.showBoth(true);
       else
         this.hideSidebar(true);
     }
 
     return this._showHideSidebarButton;
   }
 
   _updateShowHideSidebarButton() {
     if (!this._showHideSidebarButton)
       return;
     var sidebarHidden = this._showMode === WebInspector.SplitWidget.ShowMode.OnlyMain;
     var side =
         this.isVertical() ? (this.isSidebarSecond() ? 'right' : 'left') : (this.isSidebarSecond() ? 'bottom' : 'top');
-    this._showHideSidebarButton.setState(side + '-' + (sidebarHidden ? 'show' : 'hide'));
+    this._showHideSidebarButton.setGlyph((sidebarHidden ? 'show-' : 'hide-') + side +  '-sidebar-item');
     this._showHideSidebarButton.setTitle(
         sidebarHidden ? WebInspector.UIString('Show %s', this._showHideSidebarButtonTitle) :
                         WebInspector.UIString('Hide %s', this._showHideSidebarButtonTitle));
   }
 };
 
 /** @typedef {{showMode: string, size: number}} */
 WebInspector.SplitWidget.SettingForOrientation;
 
 WebInspector.SplitWidget.ShowMode = {
   Both: 'Both',
   OnlyMain: 'OnlyMain',
   OnlySidebar: 'OnlySidebar'
 };
 
 /** @enum {symbol} */
 WebInspector.SplitWidget.Events = {
   SidebarSizeChanged: Symbol('SidebarSizeChanged'),
   ShowModeChanged: Symbol('ShowModeChanged')
 };
 
 WebInspector.SplitWidget.MinPadding = 20;