Oilpan: move LiveNodeList collections to the heap.

Source/core/dom/NodeList.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2007 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 14 matching lines @@
 #define NodeList_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "wtf/Forward.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class Node;
 
-class NodeList : public ScriptWrappable, public RefCounted<NodeList> {
+class NodeList : public RefCountedWillBeGarbageCollectedFinalized<NodeList>, public ScriptWrappable {
 public:
     virtual ~NodeList() { }
 
     // DOM methods & attributes for NodeList
     virtual unsigned length() const = 0;
     virtual Node* item(unsigned index) const = 0;
 
     // Other methods (not part of DOM)
     virtual bool isEmptyNodeList() const { return false; }
     virtual bool isChildNodeList() const { return false; }
 
     virtual Node* virtualOwnerNode() const { return 0; }
 
+    virtual void trace(Visitor*) { }
+
 protected:
     NodeList()
     {
         ScriptWrappable::init(this);
     }
 };
 
 } // namespace WebCore
 
 #endif // NodeList_h