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

Source/core/svg/SVGPatternElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 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 36 matching lines @@
                           public SVGExternalResourcesRequired,
                           public SVGFitToViewBox {
     DEFINE_SELF_HANDLE(SVGPatternElement)
 public:
     static PassRefPtr<SVGPatternElement> create(const QualifiedName&, const Handle<Document>&);
 
     void collectPatternAttributes(PatternAttributes&) const;
 
     virtual AffineTransform localCoordinateSpaceTransform(SVGLocatable::CTMScope) const;
 
+    virtual void accept(Visitor* visitor) const OVERRIDE { SVGStyledElement::accept(visitor); }
+
 private:
     SVGPatternElement(const QualifiedName&, const Handle<Document>&);
     
     virtual bool isValid() const { return SVGTests::isValid(); }
     virtual bool needsPendingResourceHandling() const { return false; }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&);
     virtual void childrenChanged(bool changedByParser = false, const Handle<Node>& beforeChange = nullptr, const Handle<Node>& afterChange = nullptr, int childCountDelta = 0);
@@ skipping 19 matching lines @@
     // SVGTests
     virtual void synchronizeRequiredFeatures() { SVGTests::synchronizeRequiredFeatures(this); }
     virtual void synchronizeRequiredExtensions() { SVGTests::synchronizeRequiredExtensions(this); }
     virtual void synchronizeSystemLanguage() { SVGTests::synchronizeSystemLanguage(this); }
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif