Move isValid implementations into SVGGraphicsElement

Source/core/svg/SVGSwitchElement.h

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 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,
@@ skipping 15 matching lines @@
 
 namespace WebCore {
 
 class SVGSwitchElement FINAL : public SVGGraphicsElement {
 public:
     static PassRefPtr<SVGSwitchElement> create(Document&);
 
 private:
     explicit SVGSwitchElement(Document&);
 
-    virtual bool isValid() const OVERRIDE { return SVGTests::isValid(); }
     virtual bool supportsFocus() const OVERRIDE { return hasFocusEventListeners(); }
 
     virtual bool childShouldCreateRenderer(const Node& child) const OVERRIDE;
 
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGSwitchElement)
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
 } // namespace WebCore
 
 #endif