Remove SVGLangSpace IDL interface

Source/core/svg/SVGElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * 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 SVGElement_h
 #define SVGElement_h
 
 #include "core/dom/Element.h"
 #include "core/platform/Timer.h"
+#include "core/svg/SVGLangSpace.h"
 #include "core/svg/SVGLocatable.h"
 #include "core/svg/SVGParsingError.h"
 #include "core/svg/properties/SVGPropertyInfo.h"
 #include <wtf/HashMap.h>
 
 namespace WebCore {
 
 class AffineTransform;
 class CSSCursorImageValue;
 class Document;
 class SVGAttributeToPropertyMap;
 class SVGCursorElement;
 class SVGDocumentExtensions;
 class SVGElementInstance;
 class SVGElementRareData;
 class SVGSVGElement;
 
-class SVGElement : public Element {
+class SVGElement : public Element, public SVGLangSpace {
 public:
     static PassRefPtr<SVGElement> create(const QualifiedName&, Document*);
     virtual ~SVGElement();
 
     bool isOutermostSVGSVGElement() const;
 
     String xmlbase() const;
     void setXmlbase(const String&);
 
     SVGSVGElement* ownerSVGElement() const;
@@ skipping 120 matching lines @@
 
 inline const SVGElement* toSVGElement(const Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isSVGElement());
     return static_cast<const SVGElement*>(node);
 }
 
 }
 
 #endif