Generate the isSVG*Element() / toSVG*Element() helper functions

Source/core/svg/SVGSVGElement.h

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Rob Buis <buis@kde.org>
  * Copyright (C) 2014 Google, Inc.
  *
  * 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.
  *
@@ skipping 157 matching lines @@
     virtual AffineTransform localCoordinateSpaceTransform(SVGElement::CTMScope) const OVERRIDE;
 
     bool m_useCurrentView;
     RefPtr<SMILTimeContainer> m_timeContainer;
     RefPtr<SVGPoint> m_translation;
     RefPtr<SVGViewSpec> m_viewSpec;
 
     friend class SVGCurrentTranslateTearOff;
 };
 
-inline bool isSVGSVGElement(const Node& node)
-{
-    return node.isSVGElement() && toSVGElement(node).isSVGSVGElement();
-}
-
-DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(SVGSVGElement);
-
 } // namespace WebCore
 
 #endif