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

Source/core/svg/SVGTextElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 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 23 matching lines @@
     static PassRefPtr<SVGTextElement> create(const QualifiedName&, const Handle<Document>&);
 
     virtual SVGElement* nearestViewportElement() const;
     virtual SVGElement* farthestViewportElement() const;
 
     virtual FloatRect getBBox(StyleUpdateStrategy = AllowStyleUpdate);
     virtual AffineTransform getCTM(StyleUpdateStrategy = AllowStyleUpdate);
     virtual AffineTransform getScreenCTM(StyleUpdateStrategy = AllowStyleUpdate);
     virtual AffineTransform animatedLocalTransform() const;
 
+    virtual void accept(Visitor* visitor) const OVERRIDE { SVGTextPositioningElement::accept(visitor); }
+
 private:
     SVGTextElement(const QualifiedName&, const Handle<Document>&);
 
     virtual bool supportsFocus() const { return true; }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     virtual AffineTransform* supplementalTransform();
     virtual AffineTransform localCoordinateSpaceTransform(SVGLocatable::CTMScope mode) const { return SVGTransformable::localCoordinateSpaceTransform(mode); }
 
     virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
     virtual bool childShouldCreateRenderer(const NodeRenderingContext&) const;
             
     virtual void svgAttributeChanged(const QualifiedName&);
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGTextElement)
         DECLARE_ANIMATED_TRANSFORM_LIST(Transform, transform)
     END_DECLARE_ANIMATED_PROPERTIES
 
     // Used by <animateMotion>
     OwnPtr<AffineTransform> m_supplementalTransform;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif