DevTools: Get rid of Element.prototype.enableStyleClass

Source/devtools/front_end/CPUProfileView.js

 /*
  * Copyright (C) 2008 Apple 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 398 matching lines @@
     {
         if (!this.profile)
             return;
 
         switch (this.viewSelectComboBox.selectedOption().value) {
         case WebInspector.CPUProfileView._TypeFlame:
             this._ensureFlameChartCreated();
             this.dataGrid.detach();
             this._flameChart.show(this.element);
             this._viewType.set(WebInspector.CPUProfileView._TypeFlame);
-            this._statusBarButtonsElement.enableStyleClass("hidden", true);
+            this._statusBarButtonsElement.classList.toggle("hidden", true);
             return;
         case WebInspector.CPUProfileView._TypeTree:
             this.profileDataGridTree = this._getTopDownProfileDataGridTree();
             this._sortProfile();
             this._viewType.set(WebInspector.CPUProfileView._TypeTree);
             break;
         case WebInspector.CPUProfileView._TypeHeavy:
             this.profileDataGridTree = this._getBottomUpProfileDataGridTree();
             this._sortProfile();
             this._viewType.set(WebInspector.CPUProfileView._TypeHeavy);
             break;
         }
 
-        this._statusBarButtonsElement.enableStyleClass("hidden", false);
+        this._statusBarButtonsElement.classList.toggle("hidden", false);
 
         if (this._flameChart)
             this._flameChart.detach();
         this.dataGrid.show(this.element);
 
         if (!this.currentQuery || !this._searchFinishedCallback || !this._searchResults)
             return;
 
         // The current search needs to be performed again. First negate out previous match
         // count by calling the search finished callback with a negative number of matches.
@@ skipping 879 matching lines @@
     /**
      * @param {number} entryIndex
      * @return {!string}
      */
     entryColor: function(entryIndex)
     {
         var node = this._entryNodes[entryIndex];
         return this._colorGenerator.colorForID(node.functionName + ":" + node.url + ":" + node.lineNumber);;
     },
 }