Oilpan: Remove guardRef and guardDeref from TreeScope.

Source/core/dom/Node.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, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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
@@ skipping 655 matching lines @@
     void updateAncestorConnectedSubframeCountForRemoval() const;
     void updateAncestorConnectedSubframeCountForInsertion() const;
 
     PassRefPtr<NodeList> getDestinationInsertionPoints();
 
     void setAlreadySpellChecked(bool flag) { setFlag(flag, AlreadySpellCheckedFlag); }
     bool isAlreadySpellChecked() { return getFlag(AlreadySpellCheckedFlag); }
 
     bool isFinishedParsingChildren() const { return getFlag(IsFinishedParsingChildrenFlag); }
 
-    virtual void trace(Visitor*) { }
+    virtual void trace(Visitor*);
 
 private:
     enum NodeFlags {
         IsTextFlag = 1,
         IsContainerFlag = 1 << 1,
         IsElementFlag = 1 << 2,
         IsHTMLFlag = 1 << 3,
         IsSVGFlag = 1 << 4,
 
         ChildNeedsDistributionRecalc = 1 << 5,
@@ skipping 61 matching lines @@
 
     Node(TreeScope* treeScope, ConstructionType type)
         : m_nodeFlags(type)
         , m_parentOrShadowHostNode(0)
         , m_treeScope(treeScope)
         , m_previous(0)
         , m_next(0)
     {
         ASSERT(m_treeScope || type == CreateDocument || type == CreateShadowRoot);
         ScriptWrappable::init(this);
+#if !ENABLE(OILPAN)
         if (m_treeScope)
             m_treeScope->guardRef();
+#endif
 
 #if !defined(NDEBUG) || (defined(DUMP_NODE_STATISTICS) && DUMP_NODE_STATISTICS)
         trackForDebugging();
 #endif
         InspectorCounters::incrementCounter(InspectorCounters::NodeCounter);
     }
 
     virtual void didMoveToNewDocument(Document& oldDocument);
 
     static void reattachWhitespaceSiblings(Text* start);
@@ skipping 51 matching lines @@
 
     virtual RenderStyle* virtualComputedStyle(PseudoId = NOPSEUDO);
 
     void trackForDebugging();
 
     WillBeHeapVector<OwnPtrWillBeMember<MutationObserverRegistration> >* mutationObserverRegistry();
     WillBeHeapHashSet<RawPtrWillBeMember<MutationObserverRegistration> >* transientMutationObserverRegistry();
 
     mutable uint32_t m_nodeFlags;
     ContainerNode* m_parentOrShadowHostNode;
-    TreeScope* m_treeScope;
+    RawPtrWillBeMember<TreeScope> m_treeScope;
     Node* m_previous;
     Node* m_next;
     // When a node has rare data we move the renderer into the rare data.
     union DataUnion {
         DataUnion() : m_renderer(0) { }
         RenderObject* m_renderer;
         NodeRareDataBase* m_rareData;
     } m_data;
 };
 
@@ skipping 68 matching lines @@
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const WebCore::Node*);
 void showTree(const WebCore::Node*);
 void showNodePath(const WebCore::Node*);
 #endif
 
 #endif