Remove SVGLangSpace IDL interface

Source/core/svg/SVGUseElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 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
  * 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 SVGUseElement_h
 #define SVGUseElement_h
 
 #include "core/loader/cache/CachedDocument.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGExternalResourcesRequired.h"
-#include "core/svg/SVGLangSpace.h"
 #include "core/svg/SVGStyledTransformableElement.h"
 #include "core/svg/SVGTests.h"
 #include "core/svg/SVGURIReference.h"
 
 namespace WebCore {
 
 class CachedDocument;
 class SVGElementInstance;
 
 class SVGUseElement FINAL : public SVGStyledTransformableElement,
                             public SVGTests,
-                            public SVGLangSpace,
                             public SVGExternalResourcesRequired,
                             public SVGURIReference,
                             public CachedDocumentClient {
 public:
     static PassRefPtr<SVGUseElement> create(const QualifiedName&, Document*, bool wasInsertedByParser);
     virtual ~SVGUseElement();
 
     SVGElementInstance* instanceRoot();
     SVGElementInstance* animatedInstanceRoot() const;
     SVGElementInstance* instanceForShadowTreeElement(Node*) const;
@@ skipping 78 matching lines @@
     bool m_haveFiredLoadEvent;
     bool m_needsShadowTreeRecreation;
     RefPtr<SVGElementInstance> m_targetElementInstance;
     CachedResourceHandle<CachedDocument> m_cachedDocument;
     Timer<SVGElement> m_svgLoadEventTimer;
 };
 
 }
 
 #endif