Remove SVGLangSpace IDL interface

Source/core/svg/SVGFilterElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  * Copyright (C) Research In Motion Limited 2010. 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.
@@ skipping 11 matching lines @@
 
 #ifndef SVGFilterElement_h
 #define SVGFilterElement_h
 
 #include "SVGNames.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedEnumeration.h"
 #include "core/svg/SVGAnimatedInteger.h"
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGExternalResourcesRequired.h"
-#include "core/svg/SVGLangSpace.h"
 #include "core/svg/SVGStyledElement.h"
 #include "core/svg/SVGURIReference.h"
 #include "core/svg/SVGUnitTypes.h"
 
 namespace WebCore {
 
 class SVGFilterElement FINAL : public SVGStyledElement,
                                public SVGURIReference,
-                               public SVGLangSpace,
                                public SVGExternalResourcesRequired {
 public:
     static PassRefPtr<SVGFilterElement> create(const QualifiedName&, Document*);
 
     void setFilterRes(unsigned filterResX, unsigned filterResY);
 
 private:
     SVGFilterElement(const QualifiedName&, Document*);
 
     virtual bool needsPendingResourceHandling() const { return false; }
@@ skipping 27 matching lines @@
 
 inline SVGFilterElement* toSVGFilterElement(SVGElement* element)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!element || element->hasTagName(SVGNames::filterTag));
     return static_cast<SVGFilterElement*>(element);
 }
 
 }
 
 #endif