[oilpan] The Node hierarchy should have correct accept method chains

Source/core/html/HTMLAnchorElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2007, 2008, 2009, 2010 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 84 matching lines @@
     bool isLiveLink() const;
 
     virtual bool willRespondToMouseClickEvents() OVERRIDE;
 
     bool hasRel(uint32_t relation) const;
     void setRel(const String&);
     
     LinkHash visitedLinkHash() const;
     void invalidateCachedVisitedLinkHash() { m_cachedVisitedLinkHash = 0; }
 
-    virtual void acceptHeapVisitor(Visitor* visitor) const { HTMLElement::acceptHeapVisitor(visitor); }
-
 protected:
     HTMLAnchorElement(const QualifiedName&, Handle<Document>);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
+    virtual void acceptHeapVisitor(Visitor*) const OVERRIDE;
+
 private:
     virtual bool supportsFocus() const;
     virtual bool isMouseFocusable() const;
     virtual bool isKeyboardFocusable(KeyboardEvent*) const;
     virtual void defaultEventHandler(Event*);
     virtual void setActive(bool active = true, bool pause = false);
     virtual void accessKeyAction(bool sendMouseEvents);
     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
     virtual bool canStartSelection() const;
     virtual String target() const;
@@ skipping 34 matching lines @@
 }
 
 // Functions shared with the other anchor elements (i.e., SVG).
 
 bool isEnterKeyKeydownEvent(Event*);
 bool isLinkClick(Event*);
 
 } // namespace WebCore
 
 #endif // HTMLAnchorElement_h