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

Source/core/svg/SVGViewElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 29 matching lines @@
 public:
     static PassRefPtr<SVGViewElement> create(const QualifiedName&, const Handle<Document>&);
 
     using SVGStyledElement::ref;
     using SVGStyledElement::deref;
 
     SVGStringList& viewTarget() { return m_viewTarget; }
     SVGZoomAndPanType zoomAndPan() const { return m_zoomAndPan; }
     void setZoomAndPan(unsigned short zoomAndPan) { m_zoomAndPan = SVGZoomAndPan::parseFromNumber(zoomAndPan); }
 
+    virtual void accept(Visitor* visitor) const OVERRIDE { SVGStyledElement::accept(visitor); }
+
 private:
     SVGViewElement(const QualifiedName&, const Handle<Document>&);
 
     // FIXME: svgAttributeChanged missing.
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     virtual bool rendererIsNeeded(const NodeRenderingContext&) { return false; }
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGViewElement)
         DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
         DECLARE_ANIMATED_RECT(ViewBox, viewBox)
         DECLARE_ANIMATED_PRESERVEASPECTRATIO(PreserveAspectRatio, preserveAspectRatio)
     END_DECLARE_ANIMATED_PROPERTIES
 
     SVGZoomAndPanType m_zoomAndPan;
     SVGStringList m_viewTarget;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif