Oilpan: Remove guardRef and guardDeref from TreeScope.

Source/core/dom/shadow/ShadowRootRareData.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #ifndef ShadowRootRareData_h
 #define ShadowRootRareData_h
 
 #include "core/dom/shadow/InsertionPoint.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
-class ShadowRootRareData {
+class ShadowRootRareData : public NoBaseWillBeGarbageCollectedFinalized<ShadowRootRareData> {
 public:
     ShadowRootRareData()
         : m_descendantShadowElementCount(0)
         , m_descendantContentElementCount(0)
         , m_childShadowRootCount(0)
     {
     }
 
     HTMLShadowElement* shadowInsertionPointOfYoungerShadowRoot() const { return m_shadowInsertionPointOfYoungerShadowRoot.get(); }
     void setShadowInsertionPointOfYoungerShadowRoot(PassRefPtr<HTMLShadowElement> shadowInsertionPoint) { m_shadowInsertionPointOfYoungerShadowRoot = shadowInsertionPoint; }
@@ skipping 12 matching lines @@
 
     unsigned childShadowRootCount() const { return m_childShadowRootCount; }
 
     const Vector<RefPtr<InsertionPoint> >& descendantInsertionPoints() { return m_descendantInsertionPoints; }
     void setDescendantInsertionPoints(Vector<RefPtr<InsertionPoint> >& list) { m_descendantInsertionPoints.swap(list); }
     void clearDescendantInsertionPoints() { m_descendantInsertionPoints.clear(); }
 
     StyleSheetList* styleSheets() { return m_styleSheetList.get(); }
     void setStyleSheets(PassRefPtrWillBeRawPtr<StyleSheetList> styleSheetList) { m_styleSheetList = styleSheetList; }
 
+    void trace(Visitor* visitor) { visitor->trace(m_styleSheetList); }
+
 private:
     RefPtr<HTMLShadowElement> m_shadowInsertionPointOfYoungerShadowRoot;
     unsigned m_descendantShadowElementCount;
     unsigned m_descendantContentElementCount;
     unsigned m_childShadowRootCount;
     Vector<RefPtr<InsertionPoint> > m_descendantInsertionPoints;
-    RefPtrWillBePersistent<StyleSheetList> m_styleSheetList;
+    RefPtrWillBeMember<StyleSheetList> m_styleSheetList;
 };
 
 inline void ShadowRootRareData::didAddInsertionPoint(InsertionPoint* point)
 {
     ASSERT(point);
     if (isHTMLShadowElement(*point))
         ++m_descendantShadowElementCount;
     else if (isHTMLContentElement(*point))
         ++m_descendantContentElementCount;
     else
@@ skipping 10 matching lines @@
     else
         ASSERT_NOT_REACHED();
 
     ASSERT(m_descendantContentElementCount >= 0);
     ASSERT(m_descendantShadowElementCount >= 0);
 }
 
 } // namespace WebCore
 
 #endif