Remove support for the externalResourcesRequired attribute.

Source/core/svg/SVGViewElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 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 SVGViewElement_h
 #define SVGViewElement_h
 
 #include "SVGNames.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedPreserveAspectRatio.h"
 #include "core/svg/SVGAnimatedRect.h"
 #include "core/svg/SVGElement.h"
-#include "core/svg/SVGExternalResourcesRequired.h"
 #include "core/svg/SVGFitToViewBox.h"
 #include "core/svg/SVGStringList.h"
 #include "core/svg/SVGZoomAndPan.h"
 
 namespace WebCore {
 
 class SVGViewElement FINAL : public SVGElement,
-                             public SVGExternalResourcesRequired,
                              public SVGFitToViewBox,
                              public SVGZoomAndPan {
 public:
     static PassRefPtr<SVGViewElement> create(Document&);
 
     using SVGElement::ref;
     using SVGElement::deref;
 
     SVGStringList& viewTarget() { return m_viewTarget; }
     SVGZoomAndPanType zoomAndPan() const { return m_zoomAndPan; }
     void setZoomAndPan(unsigned short zoomAndPan) { m_zoomAndPan = SVGZoomAndPan::parseFromNumber(zoomAndPan); }
 
 private:
     explicit SVGViewElement(Document&);
 
     // FIXME: svgAttributeChanged missing.
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     virtual bool rendererIsNeeded(const RenderStyle&) { return false; }
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGViewElement)
-        DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
         DECLARE_ANIMATED_RECT(ViewBox, viewBox)
         DECLARE_ANIMATED_PRESERVEASPECTRATIO(PreserveAspectRatio, preserveAspectRatio)
     END_DECLARE_ANIMATED_PROPERTIES
 
     SVGZoomAndPanType m_zoomAndPan;
     SVGStringList m_viewTarget;
 };
 
 DEFINE_NODE_TYPE_CASTS(SVGViewElement, hasTagName(SVGNames::viewTag));
 
 } // namespace WebCore
 
 #endif