InlinedVisitor: Migrate dom to use inlined tracing

Source/core/dom/NodeRareData.h

 /*
  * Copyright (C) 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith <catfish.man@gmail.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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 25 matching lines @@
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     WillBeHeapVector<OwnPtrWillBeMember<MutationObserverRegistration> > registry;
     WillBeHeapHashSet<RawPtrWillBeMember<MutationObserverRegistration> > transientRegistry;
 
     static PassOwnPtrWillBeRawPtr<NodeMutationObserverData> create()
     {
         return adoptPtrWillBeNoop(new NodeMutationObserverData);
     }
 
-    void trace(Visitor* visitor)
+    DEFINE_INLINE_TRACE()
     {
 #if ENABLE(OILPAN)
         visitor->trace(registry);
         visitor->trace(transientRegistry);
 #endif
     }
 
 private:
     NodeMutationObserverData() { }
 };
@@ skipping 42 matching lines @@
 
     bool hasRestyleFlag(DynamicRestyleFlags mask) const { return m_restyleFlags & mask; }
     void setRestyleFlag(DynamicRestyleFlags mask) { m_restyleFlags |= mask; RELEASE_ASSERT(m_restyleFlags); }
     bool hasRestyleFlags() const { return m_restyleFlags; }
     void clearRestyleFlags() { m_restyleFlags = 0; }
 
     enum {
         ConnectedFrameCountBits = 10, // Must fit Page::maxNumberOfFrames.
     };
 
-    void trace(Visitor*);
+    DECLARE_TRACE();
 
-    void traceAfterDispatch(Visitor*);
+    DECLARE_TRACE_AFTER_DISPATCH();

[haraken, 2015/02/24 09:18:36]

Add a comment on why we need traceAfterDispatch.

     void finalizeGarbageCollectedObject();
 
 protected:
     explicit NodeRareData(LayoutObject* renderer)
         : NodeRareDataBase(renderer)
         , m_connectedFrameCount(0)
         , m_elementFlags(0)
         , m_restyleFlags(0)
         , m_isElementRareData(false)
     { }
 
 private:
     OwnPtrWillBeMember<NodeListsNodeData> m_nodeLists;
     OwnPtrWillBeMember<NodeMutationObserverData> m_mutationObserverData;
 
     unsigned m_connectedFrameCount : ConnectedFrameCountBits;
     unsigned m_elementFlags : NumberOfElementFlags;
     unsigned m_restyleFlags : NumberOfDynamicRestyleFlags;
 protected:
     unsigned m_isElementRareData : 1;
 };
 
 } // namespace blink
 
 #endif // NodeRareData_h