[DevTools] Replace usages of document with custom functions.

Source/devtools/front_end/resources/DatabaseTableView.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 68 matching lines @@
         }
         dataGrid.show(this.element);
         dataGrid.autoSizeColumns(5);
     },
 
     _queryError: function(error)
     {
         this.detachChildViews();
         this.element.removeChildren();
 
-        var errorMsgElement = document.createElement("div");
+        var errorMsgElement = createElement("div");
         errorMsgElement.className = "storage-table-error";
         errorMsgElement.textContent = WebInspector.UIString("An error occurred trying to\nread the “%s” table.", this.tableName);
         this.element.appendChild(errorMsgElement);
     },
 
     _refreshButtonClicked: function(event)
     {
         this.update();
     },
 
     __proto__: WebInspector.VBox.prototype
 }