[DevTools] Replace usages of document with custom functions.

Source/devtools/front_end/ui/StatusBarButton.js

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /**
  * @constructor
  * @extends {WebInspector.Object}
  * @param {string} elementType
  */
 WebInspector.StatusBarItem = function(elementType)
 {
-    this.element = document.createElement(elementType);
+    this.element = createElement(elementType);
     this._enabled = true;
     this._visible = true;
 }
 
 WebInspector.StatusBarItem.prototype = {
     /**
      * @param {boolean} value
      */
     setEnabled: function(value)
     {
@@ skipping 662 matching lines @@
         var options = [];
         for (var index = 0; index < this._states.length; index++) {
             if (this._states[index] !== this.state && this._states[index] !== this._currentState)
                 options.push(this._buttons[index]);
         }
         return options;
     },
 
     __proto__: WebInspector.StatusBarButton.prototype
 }