[oilpan] Implement accept methods to trace the class hierarchy of SVGElement and all sub-classes.

Source/core/svg/SVGAnimateTransformElement.h

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 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 19 matching lines @@
 namespace WebCore {
 
 class AffineTransform;
 
 class SVGAnimateTransformElement : public SVGAnimateElement {
 public:
     static PassRefPtr<SVGAnimateTransformElement> create(const QualifiedName&, const Handle<Document>&);
 
     SVGTransform::SVGTransformType transformType() const { return m_type; }
 
+    virtual void accept(Visitor* visitor) const OVERRIDE { SVGAnimateElement::accept(visitor); }
+
 private:
     SVGAnimateTransformElement(const QualifiedName&, const Handle<Document>&);
     
     virtual bool hasValidAttributeType();
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     SVGTransform::SVGTransformType m_type;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif // SVGAnimateTransformElement_h