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

Source/core/svg/SVGMPathElement.h

 /*
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 25 matching lines @@
                         public SVGExternalResourcesRequired {
 public:
     static PassRefPtr<SVGMPathElement> create(const QualifiedName&, const Handle<Document>&);
 
     virtual ~SVGMPathElement();
 
     SVGPathElement* pathElement();
 
     void targetPathChanged();
 
+    virtual void accept(Visitor* visitor) const OVERRIDE { SVGElement::accept(visitor); }
+
 private:
     SVGMPathElement(const QualifiedName&, const Handle<Document>&);
 
     void buildPendingResource();
     void clearResourceReferences();
     virtual InsertionNotificationRequest insertedInto(const Handle<ContainerNode>&) OVERRIDE;
     void removedFrom(const Handle<ContainerNode>&);
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&) OVERRIDE;
 
     void notifyParentOfPathChange(const Handle<ContainerNode>&);
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGMPathElement)
         DECLARE_ANIMATED_STRING(Href, href)
         DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif // SVGMPathElement_h