Implement reflected attributes of HTMLMarqueeElement in Blink-in-JS

Source/core/testing/PrivateScriptTest.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.
 
 "use strict";
 
 installClass("PrivateScriptTest", function(global) {
     var InternalsPrototype = Object.create(Element.prototype);
 
-    InternalsPrototype.constructor = function() {
+    InternalsPrototype.initialize = function() {
         this.m_shortAttribute = -1;
         this.m_stringAttribute = "xxx";
         this.m_nodeAttribute = null;
     }
 
     InternalsPrototype.doNothing = function() {
     }
 
     InternalsPrototype.return123 = function() {
         return 123;
@@ skipping 93 matching lines @@
         get: function() { throw new DOMExceptionInPrivateScript("IndexSizeError", "getter threw error"); },
         set: function(value) { throw new DOMExceptionInPrivateScript("IndexSizeError", "setter threw error"); }
     });
 
     InternalsPrototype.voidMethodThrowsSyntaxError = function() {
         throw new DOMExceptionInPrivateScript("SyntaxError", "method threw error");
     }
 
     return InternalsPrototype;
 });