Use toSVGPathElement() instead of static_cast<>

Source/core/svg/properties/SVGAnimatedPathSegListPropertyTearOff.h

 /*
  * Copyright (C) Research In Motion Limited 2010, 2012. All rights reserved.
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 70 matching lines @@
     void animationEnded()
     {
         ASSERT(m_animatedPathByteStream);
         m_animatedPathByteStream = 0;
         SVGAnimatedListPropertyTearOff<SVGPathSegList>::animationEnded();
     }
 
     void animValDidChange()
     {
         ASSERT(m_animatedPathByteStream);
-        SVGPathElement* pathElement = static_cast<SVGPathElement*>(contextElement());
+        SVGPathElement* pathElement = toSVGPathElement(contextElement());
 
         // If the animVal is observed from JS, we have to update it on each animation step.
         // This is an expensive operation and only done, if someone actually observes the animatedPathSegList() while an animation is running.
         if (pathElement->isAnimValObserved()) {
             SVGPathSegList& animatedList = currentAnimatedValue();
             animatedList.clear();
             buildSVGPathSegListFromByteStream(m_animatedPathByteStream, pathElement, animatedList, UnalteredParsing);
         }
 
         SVGAnimatedListPropertyTearOff<SVGPathSegList>::animValDidChange();
     }
 
     SVGPathByteStream* animatedPathByteStream() const { return m_animatedPathByteStream; }
 
 private:
     SVGAnimatedPathSegListPropertyTearOff(SVGElement* contextElement, const QualifiedName& attributeName, AnimatedPropertyType animatedPropertyType, SVGPathSegList& values)
         : SVGAnimatedListPropertyTearOff<SVGPathSegList>(contextElement, attributeName, animatedPropertyType, values)
         , m_animatedPathByteStream(0)
     {
     }
 
     SVGPathByteStream* m_animatedPathByteStream;
 };
 
 }
 
 #endif // SVGAnimatedPathSegListPropertyTearOff_h