Remove support for the externalResourcesRequired attribute.

Source/core/svg/SVGSymbolElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 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,
@@ skipping 11 matching lines @@
 
 #include "core/svg/SVGSymbolElement.h"
 
 #include "SVGNames.h"
 #include "core/rendering/svg/RenderSVGHiddenContainer.h"
 #include "core/svg/SVGElementInstance.h"
 
 namespace WebCore {
 
 // Animated property definitions
-DEFINE_ANIMATED_BOOLEAN(SVGSymbolElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
 DEFINE_ANIMATED_PRESERVEASPECTRATIO(SVGSymbolElement, SVGNames::preserveAspectRatioAttr, PreserveAspectRatio, preserveAspectRatio)
 DEFINE_ANIMATED_RECT(SVGSymbolElement, SVGNames::viewBoxAttr, ViewBox, viewBox)
 
 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGSymbolElement)
-    REGISTER_LOCAL_ANIMATED_PROPERTY(externalResourcesRequired)
     REGISTER_LOCAL_ANIMATED_PROPERTY(viewBox)
     REGISTER_LOCAL_ANIMATED_PROPERTY(preserveAspectRatio)
     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGElement)
 END_REGISTER_ANIMATED_PROPERTIES
 
 inline SVGSymbolElement::SVGSymbolElement(Document& document)
     : SVGElement(SVGNames::symbolTag, document)
 {
     ScriptWrappable::init(this);
     registerAnimatedPropertiesForSVGSymbolElement();
 }
 
 PassRefPtr<SVGSymbolElement> SVGSymbolElement::create(Document& document)
 {
     return adoptRef(new SVGSymbolElement(document));
 }
 
 bool SVGSymbolElement::isSupportedAttribute(const QualifiedName& attrName)
 {
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty()) {
-        SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
+    if (supportedAttributes.isEmpty())
         SVGFitToViewBox::addSupportedAttributes(supportedAttributes);
-    }
+
     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
 }
 
 void SVGSymbolElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     if (!isSupportedAttribute(name)) {
         SVGElement::parseAttribute(name, value);
         return;
     }
 
-    if (SVGExternalResourcesRequired::parseAttribute(name, value))
-        return;
     if (SVGFitToViewBox::parseAttribute(this, name, value))
         return;
 
     ASSERT_NOT_REACHED();
 }
 
 void SVGSymbolElement::svgAttributeChanged(const QualifiedName& attrName)
 {
     if (!isSupportedAttribute(attrName)) {
         SVGElement::svgAttributeChanged(attrName);
@@ skipping 11 matching lines @@
 {
     return hasAttribute(SVGNames::viewBoxAttr);
 }
 
 RenderObject* SVGSymbolElement::createRenderer(RenderStyle*)
 {
     return new RenderSVGHiddenContainer(this);
 }
 
 }