Move toClipPath to SVGGeometryElement.

Source/core/svg/SVGGeometryElement.h

 /*
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 
 class SVGPointTearOff;
 
 class SVGGeometryElement : public SVGGraphicsElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
     virtual Path asPath() const = 0;
     bool isPointInFill(PassRefPtrWillBeRawPtr<SVGPointTearOff>) const;
     bool isPointInStroke(PassRefPtrWillBeRawPtr<SVGPointTearOff>) const;
 
-    void toClipPath(Path&) override;
+    void toClipPath(Path&) const;
 
     LayoutObject* createLayoutObject(const ComputedStyle&) override;
 
 protected:
     SVGGeometryElement(const QualifiedName&, Document&, ConstructionType = CreateSVGElement);
 
 private:
     bool isSVGGeometryElement() const override final { return true; }
 };
 
 inline bool isSVGGeometryElement(const SVGElement& element)
 {
     return element.isSVGGeometryElement();
 }
 
 DEFINE_SVGELEMENT_TYPE_CASTS_WITH_FUNCTION(SVGGeometryElement);
 
 } // namespace blink
 
 #endif // SVGGeometryElement_h