Remove support for the externalResourcesRequired attribute.

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/SVGElement.h"
-#include "core/svg/SVGExternalResourcesRequired.h"
 #include "core/svg/SVGURIReference.h"
 #include "core/svg/SVGUnitTypes.h"
 
 namespace WebCore {
 
 class SVGFilterElement FINAL : public SVGElement,
-                               public SVGURIReference,
-                               public SVGExternalResourcesRequired {
+                               public SVGURIReference {
 public:
     static PassRefPtr<SVGFilterElement> create(Document&);
 
     void setFilterRes(unsigned filterResX, unsigned filterResY);
     void addClient(Node*);
     void removeClient(Node*);
 
 private:
     explicit SVGFilterElement(Document&);
 
@@ skipping 15 matching lines @@
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGFilterElement)
         DECLARE_ANIMATED_ENUMERATION(FilterUnits, filterUnits, SVGUnitTypes::SVGUnitType)
         DECLARE_ANIMATED_ENUMERATION(PrimitiveUnits, primitiveUnits, SVGUnitTypes::SVGUnitType)
         DECLARE_ANIMATED_LENGTH(X, x)
         DECLARE_ANIMATED_LENGTH(Y, y)
         DECLARE_ANIMATED_LENGTH(Width, width)
         DECLARE_ANIMATED_LENGTH(Height, height)
         DECLARE_ANIMATED_INTEGER(FilterResX, filterResX)
         DECLARE_ANIMATED_INTEGER(FilterResY, filterResY)
         DECLARE_ANIMATED_STRING(Href, href)
-        DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
     END_DECLARE_ANIMATED_PROPERTIES
 
     HashSet<RefPtr<Node> > m_clientsToAdd;
 };
 
 DEFINE_NODE_TYPE_CASTS(SVGFilterElement, hasTagName(SVGNames::filterTag));
 
 }
 
 #endif