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

Source/core/svg/SVGTextContentElement.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 79 matching lines @@
     void selectSubString(unsigned charnum, unsigned nchars, ExceptionCode&);
 
     static SVGTextContentElement* elementFromRenderer(RenderObject*);
 
     // textLength is not declared using the standard DECLARE_ANIMATED_LENGTH macro
     // as its getter needs special handling (return getComputedTextLength(), instead of m_textLength).
     SVGLength& specifiedTextLength() { return m_specifiedTextLength; }
     PassRefPtr<SVGAnimatedLength> textLengthAnimated();
     static const SVGPropertyInfo* textLengthPropertyInfo();
 
+    virtual void accept(Visitor* visitor) const OVERRIDE { SVGStyledElement::accept(visitor); }
+
 protected:
     SVGTextContentElement(const QualifiedName&, const Handle<Document>&);
 
     virtual bool isValid() const { return SVGTests::isValid(); }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, const Handle<MutableStylePropertySet>&) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&);
@@ skipping 23 matching lines @@
 inline SVGTextContentElement* toSVGTextContentElement(SVGElement* element)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!element || element->isTextContent());
     return static_cast<SVGTextContentElement*>(element);
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif