Remove SVGLangSpace IDL interface

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>
  *
  * 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef SVGSVGElement_h
 #define SVGSVGElement_h
 
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGAnimatedPreserveAspectRatio.h"
 #include "core/svg/SVGAnimatedRect.h"
 #include "core/svg/SVGExternalResourcesRequired.h"
 #include "core/svg/SVGFitToViewBox.h"
-#include "core/svg/SVGLangSpace.h"
 #include "core/svg/SVGStyledTransformableElement.h"
 #include "core/svg/SVGTests.h"
 #include "core/svg/SVGZoomAndPan.h"
 
 namespace WebCore {
 
 class SVGAngle;
 class SVGMatrix;
 class SVGTransform;
 class SVGViewSpec;
 class SVGViewElement;
 class SMILTimeContainer;
 
 class SVGSVGElement FINAL : public SVGStyledTransformableElement,
                             public SVGTests,
-                            public SVGLangSpace,
                             public SVGExternalResourcesRequired,
                             public SVGFitToViewBox,
                             public SVGZoomAndPan {
 public:
     static PassRefPtr<SVGSVGElement> create(const QualifiedName&, Document*);
 
     using SVGStyledTransformableElement::ref;
     using SVGStyledTransformableElement::deref;
 
     virtual bool isValid() const { return SVGTests::isValid(); }
@@ skipping 133 matching lines @@
 inline SVGSVGElement* toSVGSVGElement(Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isSVGElement());
     ASSERT_WITH_SECURITY_IMPLICATION(!node || toSVGElement(node)->isSVGSVGElement());
     return static_cast<SVGSVGElement*>(node);
 }
 
 } // namespace WebCore
 
 #endif