[DevTools] Replace usages of document with custom functions.

Source/devtools/front_end/sources/UISourceCodeFrame.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 198 matching lines @@
     __proto__: WebInspector.SourceFrame.prototype
 }
 
 /**
  * @constructor
  * @param {!WebInspector.UISourceCodeFrame.Infobar.Level} level
  * @param {string} message
  */
 WebInspector.UISourceCodeFrame.Infobar = function(level, message)
 {
-    this.element = document.createElementWithClass("div", "source-frame-infobar source-frame-infobar-" + level);
+    this.element = createElementWithClass("div", "source-frame-infobar source-frame-infobar-" + level);
     this._mainRow = this.element.createChild("div", "source-frame-infobar-main-row");
     this._detailsContainer = this.element.createChild("span", "source-frame-infobar-details-container");
 
     this._mainRow.createChild("span", "source-frame-infobar-icon");
     this._mainRow.createChild("span", "source-frame-infobar-row-message").textContent = message;
 
     this._toggleElement = this._mainRow.createChild("div", "source-frame-infobar-toggle source-frame-infobar-link");
     this._toggleElement.addEventListener("click", this._onToggleDetails.bind(this), false);
 
     this._closeElement = this._mainRow.createChild("div", "close-button");
@@ skipping 56 matching lines @@
         return detailsRowMessage;
     },
 
     dispose: function()
     {
         this.element.remove();
         this._onResize();
         delete this._uiSourceCodeFrame;
     }
 }