Remove support for the externalResourcesRequired attribute.

Source/core/svg/SVGUseElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 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 SVGUseElement_h
 #define SVGUseElement_h
 
 #include "SVGNames.h"
 #include "core/fetch/DocumentResource.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
-#include "core/svg/SVGExternalResourcesRequired.h"
 #include "core/svg/SVGGraphicsElement.h"
 #include "core/svg/SVGURIReference.h"
 
 namespace WebCore {
 
 class DocumentResource;
 class SVGElementInstance;
 
 class SVGUseElement FINAL : public SVGGraphicsElement,
-                            public SVGExternalResourcesRequired,
                             public SVGURIReference,
                             public DocumentResourceClient {
 public:
     static PassRefPtr<SVGUseElement> create(Document&, bool wasInsertedByParser);
     virtual ~SVGUseElement();
 
     SVGElementInstance* instanceRoot();
     SVGElementInstance* animatedInstanceRoot() const;
     SVGElementInstance* instanceForShadowTreeElement(Node*) const;
     void invalidateShadowTree();
     void invalidateDependentShadowTrees();
 
     RenderObject* rendererClipChild() const;
 
 private:
     SVGUseElement(Document&, bool wasInsertedByParser);
 
     virtual bool isValid() const { return SVGTests::isValid(); }
+    virtual bool isStructurallyExternal() const { return isExternalURIReference(hrefCurrentValue(), document()); }
     virtual bool supportsFocus() const OVERRIDE { return hasFocusEventListeners(); }
 
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
     virtual void buildPendingResource();
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&);
 
     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
     virtual void willRecalcStyle(StyleRecalcChange) OVERRIDE;
 
     virtual RenderObject* createRenderer(RenderStyle*);
     virtual void toClipPath(Path&);
 
     void clearResourceReferences();
     void buildShadowAndInstanceTree(SVGElement* target);
     void detachInstance();
 
-    virtual bool haveLoadedRequiredResources() { return SVGExternalResourcesRequired::haveLoadedRequiredResources(); }
+    virtual bool haveLoadedRequiredResources() { return m_haveFiredLoadEvent; }
 
     virtual void finishParsingChildren();
     virtual bool selfHasRelativeLengths() const;
 
     // Instance tree handling
     void buildInstanceTree(SVGElement* target, SVGElementInstance* targetInstance, bool& foundCycle, bool foundUse);
     bool hasCycleUseReferencing(SVGUseElement*, SVGElementInstance* targetInstance, SVGElement*& newTarget);
 
     // Shadow tree handling
     void buildShadowTree(SVGElement* target, SVGElementInstance* targetInstance);
 
     void expandUseElementsInShadowTree(Node* element);
     void expandSymbolElementsInShadowTree(Node* element);
 
     // "Tree connector"
     void associateInstancesWithShadowTreeElements(Node* target, SVGElementInstance* targetInstance);
     SVGElementInstance* instanceForShadowTreeElement(Node* element, SVGElementInstance* instance) const;
 
     void transferUseAttributesToReplacedElement(SVGElement* from, SVGElement* to) const;
     void transferEventListenersToShadowTree(SVGElementInstance* target);
 
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGUseElement)
         DECLARE_ANIMATED_LENGTH(X, x)
         DECLARE_ANIMATED_LENGTH(Y, y)
         DECLARE_ANIMATED_LENGTH(Width, width)
         DECLARE_ANIMATED_LENGTH(Height, height)
         DECLARE_ANIMATED_STRING(Href, href)
-        DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
     END_DECLARE_ANIMATED_PROPERTIES
 
     bool resourceIsStillLoading();
     Document* externalDocument() const;
     bool instanceTreeIsLoading(SVGElementInstance*);
     virtual void notifyFinished(Resource*);
     Document* referencedDocument() const;
     void setDocumentResource(ResourcePtr<DocumentResource>);
 
-    // SVGExternalResourcesRequired
-    virtual void setHaveFiredLoadEvent(bool haveFiredLoadEvent) { m_haveFiredLoadEvent = haveFiredLoadEvent; }
-    virtual bool isParserInserted() const { return m_wasInsertedByParser; }
-    virtual bool haveFiredLoadEvent() const { return m_haveFiredLoadEvent; }
     virtual Timer<SVGElement>* svgLoadEventTimer() OVERRIDE { return &m_svgLoadEventTimer; }
 
     bool m_wasInsertedByParser;
     bool m_haveFiredLoadEvent;
     bool m_needsShadowTreeRecreation;
     RefPtr<SVGElementInstance> m_targetElementInstance;
     ResourcePtr<DocumentResource> m_resource;
     Timer<SVGElement> m_svgLoadEventTimer;
 };
 
 DEFINE_NODE_TYPE_CASTS(SVGUseElement, hasTagName(SVGNames::useTag));
 
 }
 
 #endif