[DevTools] Replace usages of document with custom functions.

Source/devtools/front_end/sources/AdvancedSearchView.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @extends {WebInspector.VBox}
  */
 WebInspector.AdvancedSearchView = function()
 {
@@ skipping 307 matching lines @@
     __proto__: WebInspector.VBox.prototype
 }
 
 /**
  * @constructor
  * @param {!WebInspector.ProjectSearchConfig} searchConfig
  */
 WebInspector.SearchResultsPane = function(searchConfig)
 {
     this._searchConfig = searchConfig;
-    this.element = document.createElement("div");
+    this.element = createElement("div");
 }
 
 WebInspector.SearchResultsPane.prototype = {
     /**
      * @return {!WebInspector.ProjectSearchConfig}
      */
     get searchConfig()
     {
         return this._searchConfig;
     },
@@ skipping 71 matching lines @@
     performIndexing: function(progress, callback) { },
 
     stopSearch: function() { },
 
     /**
      * @param {!WebInspector.ProjectSearchConfig} searchConfig
      * @return {!WebInspector.SearchResultsPane}
      */
     createSearchResultsPane: function(searchConfig) { }
 }