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

Source/core/svg/SVGStyledElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 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 42 matching lines @@
     void setInstanceUpdatesBlocked(bool);
 
     virtual void animatedPropertyTypeForAttribute(const QualifiedName&, Vector<AnimatedPropertyType>&);
     static bool isAnimatableCSSProperty(const QualifiedName&);
 
     virtual AffineTransform localCoordinateSpaceTransform(SVGLocatable::CTMScope) const;
 
     virtual Result<CSSStyleDeclaration> style() { return StyledElement::style(); }
     virtual bool needsPendingResourceHandling() const { return true; }
 
+    virtual void accept(Visitor* visitor) const OVERRIDE { SVGElement::accept(visitor); }
+
 protected: 
     SVGStyledElement(const QualifiedName&, const Handle<Document>&, ConstructionType = CreateSVGElement);
     virtual bool rendererIsNeeded(const NodeRenderingContext&);
 
     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&) OVERRIDE;
 
     virtual InsertionNotificationRequest insertedInto(const Handle<ContainerNode>&) OVERRIDE;
@@ skipping 24 matching lines @@
 inline SVGStyledElement* toSVGStyledElement(Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || (node->isStyledElement() && node->isSVGElement()));
     return static_cast<SVGStyledElement*>(node);
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif // SVGStyledElement