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

Source/WebCore/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 1581 matching lines @@
     return this == documentInternal();
 }
 
 inline Node::Node(Document* document, ConstructionType type)
     : m_nodeFlags(type)
     , m_parentOrShadowHostNode(0)
     , m_treeScope(document)
     , m_previous(0)
     , m_next(0)
 {
+    ScriptWrappable::init(this);
     if (!m_treeScope)
         m_treeScope = TreeScope::noDocumentInstance();
     m_treeScope->guardRef();
 
 #if !defined(NDEBUG) || (defined(DUMP_NODE_STATISTICS) && DUMP_NODE_STATISTICS)
     trackForDebugging();
 #endif
     InspectorCounters::incrementCounter(InspectorCounters::NodeCounter);
 }
 
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace WebCore
 
 #endif // Document_h