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

Source/core/html/HTMLFormElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 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 103 matching lines @@
     Result<HTMLFormControlElement> elementForAlias(const AtomicString&);
     void addElementAlias(Handle<HTMLFormControlElement>, const AtomicString& alias);
 
     CheckedRadioButtons& checkedRadioButtons() { return m_checkedRadioButtons; }
 
     const Vector<FormAssociatedElement*>& associatedElements() const { return m_associatedElements; }
     const Vector<HTMLImageElement*>& imageElements() const { return m_imageElements; }
 
     void getTextFieldValues(StringPairVector& fieldNamesAndValues) const;
 
+    virtual void acceptHeapVisitor(Visitor*) const OVERRIDE;
+
 private:
     HTMLFormElement(const QualifiedName&, Handle<Document>);
 
     virtual bool rendererIsNeeded(const NodeRenderingContext&);
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
     virtual void finishParsingChildren() OVERRIDE;
 
     virtual void handleLocalEvents(Event*);
 
@@ skipping 39 matching lines @@
 
     void requestAutocompleteTimerFired(Timer<HTMLFormElement>*);
 
     Vector<RefPtr<Event> > m_pendingAutocompleteEvents;
     Timer<HTMLFormElement> m_requestAutocompleteTimer;
 };
 
 } // namespace WebCore
 
 #endif // HTMLFormElement_h