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

Source/core/svg/SVGAElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  *
  * 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 23 matching lines @@
 
 class SVGAElement : public SVGStyledTransformableElement,
                     public SVGURIReference,
                     public SVGTests,
                     public SVGLangSpace,
                     public SVGExternalResourcesRequired {
     DEFINE_SELF_HANDLE(SVGAElement)
 public:
     static PassRefPtr<SVGAElement> create(const QualifiedName&, const Handle<Document>&);
 
+    virtual void accept(Visitor* visitor) const OVERRIDE { SVGStyledTransformableElement::accept(visitor); }
+
 private:
     SVGAElement(const QualifiedName&, const Handle<Document>&);
 
     virtual bool isValid() const { return SVGTests::isValid(); }
     
     virtual String title() const;
     virtual String target() const { return svgTarget(); }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
@@ skipping 22 matching lines @@
     // SVGTests
     virtual void synchronizeRequiredFeatures() { SVGTests::synchronizeRequiredFeatures(this); }
     virtual void synchronizeRequiredExtensions() { SVGTests::synchronizeRequiredExtensions(this); }
     virtual void synchronizeSystemLanguage() { SVGTests::synchronizeSystemLanguage(this); }
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif // SVGAElement_h