Remove support for the externalResourcesRequired attribute.

Source/core/svg/SVGExternalResourcesRequired.h

Index: Source/core/svg/SVGExternalResourcesRequired.h
diff --git a/Source/core/svg/SVGExternalResourcesRequired.h b/Source/core/svg/SVGExternalResourcesRequired.h
deleted file mode 100644
index c8781c33726ebc8cfce3e737634eddd8862dd5da..0000000000000000000000000000000000000000
--- a/Source/core/svg/SVGExternalResourcesRequired.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
- * Copyright (C) 2004, 2005 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 SVGExternalResourcesRequired_h
-#define SVGExternalResourcesRequired_h
-
-#include "core/dom/QualifiedName.h"
-#include "wtf/HashSet.h"
-
-namespace WebCore {
-
-class Attribute;
-class SVGElement;
-
-// Notes on a SVG 1.1 spec discrepancy:
-// The SVG DOM defines the attribute externalResourcesRequired as being of type SVGAnimatedBoolean, whereas the
-// SVG language definition says that externalResourcesRequired is not animated. Because the SVG language definition
-// states that externalResourcesRequired cannot be animated, the animVal will always be the same as the baseVal.
-// FIXME: When implementing animVal support, make sure that animVal==baseVal for externalResourcesRequired
-class SVGExternalResourcesRequired {
-public:
-    virtual ~SVGExternalResourcesRequired() { }
-
-    bool parseAttribute(const QualifiedName&, const AtomicString&);
-    bool isKnownAttribute(const QualifiedName&);
-    void addSupportedAttributes(HashSet<QualifiedName>&);
-    bool handleAttributeChange(SVGElement*, const QualifiedName&);
-
-protected:
-    // These types look a bit awkward, but have to match the generic types of the SVGAnimatedProperty macros.
-    virtual void setExternalResourcesRequiredBaseValue(const bool&, const bool validValue = true) = 0;
-    virtual bool& externalResourcesRequiredBaseValue() const = 0;
-
-    virtual void setHaveFiredLoadEvent(bool) { }
-    virtual bool isParserInserted() const { return false; }
-    virtual bool haveFiredLoadEvent() const { return false; }
-
-    void dispatchLoadEvent(SVGElement*);
-    void insertedIntoDocument(SVGElement*);
-    void finishParsingChildren();
-    bool haveLoadedRequiredResources() const;
-};
-
-} // namespace WebCore
-
-#endif