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

Source/WebCore/html/HTMLTrackElement.cpp

 /*
  * Copyright (C) 2011 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 41 matching lines @@
     return url.string().substring(0, maximumURLLengthForLogging) + "...";
 }
 #endif
     
 inline HTMLTrackElement::HTMLTrackElement(const QualifiedName& tagName, Document* document)
     : HTMLElement(tagName, document)
     , m_loadTimer(this, &HTMLTrackElement::loadTimerFired)
 {
     LOG(Media, "HTMLTrackElement::HTMLTrackElement - %p", this);
     ASSERT(hasTagName(trackTag));
+    ScriptWrappable::init(this);
 }
 
 HTMLTrackElement::~HTMLTrackElement()
 {
     if (m_track)
         m_track->clearClient();
 }
 
 PassRefPtr<HTMLTrackElement> HTMLTrackElement::create(const QualifiedName& tagName, Document* document)
 {
@@ skipping 294 matching lines @@
 
 void HTMLTrackElement::setItemValueText(const String& value, ExceptionCode&)
 {
     setAttribute(srcAttr, value);
 }
 #endif
 
 }
 
 #endif