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

Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2887 matching lines @@
 {
     ensureElementRareData()->setHasPendingResources(true);
 }
 
 void Element::clearHasPendingResources()
 {
     ensureElementRareData()->setHasPendingResources(false);
 }
 #endif
 
+void Element::acceptHeapVisitor(Visitor* visitor) const
+{
+    ContainerNode::acceptHeapVisitor(visitor);
+}
+
 void ElementData::finalize()
 {
     if (m_isUnique)
         static_cast<UniqueElementData*>(this)->~UniqueElementData();
     else
         static_cast<ShareableElementData*>(this)->~ShareableElementData();
 }
 
 ElementData::ElementData()
     : m_isUnique(true)
@@ skipping 219 matching lines @@
     return &m_attributeVector.at(index);
 }
 
 void UniqueElementData::acceptHeapVisitor(Visitor* visitor) const
 {
     visitor->visit(m_presentationAttributeStyle);
     ElementData::acceptHeapVisitor(visitor);
 }
 
 } // namespace WebCore