Devirtualize several SVG classes destructors

Source/core/svg/SVGViewSpec.h

 /*
  * Copyright (C) 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 17 matching lines @@
 #include "core/svg/SVGZoomAndPan.h"
 
 namespace WebCore {
 
 class ExceptionState;
 class SVGElement;
 class SVGTransformListPropertyTearOff;
 
 class SVGViewSpec : public RefCounted<SVGViewSpec>, public ScriptWrappable, public SVGZoomAndPan, public SVGFitToViewBox {
 public:
-    virtual ~SVGViewSpec() { }
-
     using RefCounted<SVGViewSpec>::ref;
     using RefCounted<SVGViewSpec>::deref;
 
     static PassRefPtr<SVGViewSpec> create(SVGElement* contextElement)
     {
         return adoptRef(new SVGViewSpec(contextElement));
     }
 
     bool parseViewSpec(const String&);
     void reset();
@@ skipping 56 matching lines @@
 
     SVGTransformList m_transform;
     SVGRect m_viewBox;
     SVGPreserveAspectRatio m_preserveAspectRatio;
     String m_viewTargetString;
 };
 
 } // namespace WebCore
 
 #endif