[SVG2] Add tabindex handling in svg.

Source/core/svg/SVGDefsElement.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 12 matching lines @@
 
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGGraphicsElement.h"
 
 namespace WebCore {
 
 class SVGDefsElement FINAL : public SVGGraphicsElement {
 public:
     static PassRefPtr<SVGDefsElement> create(Document&);
 
+    virtual bool supportsFocus() const OVERRIDE { return false; }
+
 private:
     explicit SVGDefsElement(Document&);
 
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
-
 };
 
 } // namespace WebCore
 
 #endif