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

Source/core/dom/Text.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 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 44 matching lines @@
     virtual bool canContainRangeEndPoint() const { return true; }
     virtual NodeType nodeType() const;
 
 protected:
     Text(Handle<Document> document, const String& data, ConstructionType type)
         : CharacterData(document, data, type)
     {
         ScriptWrappable::init(this);
     }
 
+    virtual void acceptHeapVisitor(Visitor*) const OVERRIDE;
+
 private:
     virtual String nodeName() const;
     virtual PassRefPtr<Node> cloneNode(bool deep);
     virtual bool childTypeAllowed(NodeType) const;
 
     virtual PassRefPtr<Text> virtualCreate(const String&);
 
 #ifndef NDEBUG
     virtual void formatForDebugger(char* buffer, unsigned length) const;
 #endif
 };
 
 inline Text* toText(Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isTextNode());
     return static_cast<Text*>(node);
 }
 
 } // namespace WebCore
 
 #endif // Text_h