First part of work to move V8 binding integrity off of vtables.

Source/WebCore/html/HTMLHeadingElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 10 matching lines @@
  */
 
 #include "config.h"
 #include "HTMLHeadingElement.h"
 
 namespace WebCore {
 
 inline HTMLHeadingElement::HTMLHeadingElement(const QualifiedName& tagName, Document* document)
     : HTMLElement(tagName, document)
 {
+    ScriptWrappable::init(this);
 }
 
 PassRefPtr<HTMLHeadingElement> HTMLHeadingElement::create(const QualifiedName& tagName, Document* document)
 {
     return adoptRef(new HTMLHeadingElement(tagName, document));
 }
 
 }