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

Source/core/html/HTMLElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009 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 96 matching lines @@
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, Handle<MutableStylePropertySet>) OVERRIDE;
     unsigned parseBorderWidthAttribute(const AtomicString&) const;
 
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
 
     virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0);
     void calculateAndAdjustDirectionality();
 
+    virtual void acceptHeapVisitor(Visitor*) const OVERRIDE;
+
 private:
     virtual String nodeName() const;
 
     void mapLanguageAttributeToLocale(const AtomicString&, Handle<MutableStylePropertySet>);
 
     virtual HTMLFormElement* virtualForm() const;
 
     Node* insertAdjacent(const String& where, Node* newChild, ExceptionCode&);
     PassRefPtr<DocumentFragment> textToFragment(const String&, ExceptionCode&);
 
@@ skipping 24 matching lines @@
 inline HTMLElement::HTMLElement(const QualifiedName& tagName, Handle<Document> document, ConstructionType type = CreateHTMLElement)
     : StyledElement(tagName, document, type)
 {
     ASSERT(tagName.localName().impl());
     ScriptWrappable::init(this);
 }
 
 } // namespace WebCore
 
 #endif // HTMLElement_h