SVG: SVGAnimateElement should not cache |m_animatedElements|

Source/core/svg/SVGStaticStringList.h

 /*
  * Copyright (C) 2014 Google Inc. 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 33 matching lines @@
 public:
     static PassRefPtr<SVGStaticStringList> create(SVGElement* contextElement, const QualifiedName& attributeName)
     {
         return adoptRef(new SVGStaticStringList(contextElement, attributeName));
     }
 
     virtual ~SVGStaticStringList();
 
     // SVGAnimatedPropertyBase:
     virtual SVGPropertyBase* currentValueBase() OVERRIDE;
+    virtual bool isAnimating() const OVERRIDE;
     virtual void animationStarted() OVERRIDE;
     virtual PassRefPtr<SVGPropertyBase> createAnimatedValue() OVERRIDE;
     virtual void setAnimatedValue(PassRefPtr<SVGPropertyBase>) OVERRIDE;
     virtual void animationEnded() OVERRIDE;
     virtual bool needsSynchronizeAttribute() OVERRIDE;
 
     void setBaseValueAsString(const String& value, SVGParsingError& parseError);
 
     SVGStringList* value() { return m_value.get(); }
     SVGStringListTearOff* tearOff();
 
 private:
     SVGStaticStringList(SVGElement*, const QualifiedName&);
 
     RefPtr<SVGStringList> m_value;
     RefPtr<SVGStringListTearOff> m_tearOff;
 };
 
 }
 
 #endif