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diff --git a/WebCore/svg/SVGElementRareData.h b/WebCore/svg/SVGElementRareData.h
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+++ b/WebCore/svg/SVGElementRareData.h
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+/*
+ * 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.
+ *
+ * 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 SVGElementRareData_h
+#define SVGElementRareData_h
+
+#include <wtf/HashSet.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/StdLibExtras.h>
+
+namespace WebCore {
+
+class CSSCursorImageValue;
+class SVGCursorElement;
+class SVGElement;
+class SVGElementInstance;
+
+class SVGElementRareData : public Noncopyable {
+public:
+    SVGElementRareData()
+        : m_cursorElement(0)
+        , m_cursorImageValue(0)
+        , m_instancesUpdatesBlocked(false)
+    {
+    }
+
+    typedef HashMap<const SVGElement*, SVGElementRareData*> SVGElementRareDataMap;
+
+    static SVGElementRareDataMap& rareDataMap()
+    {
+        DEFINE_STATIC_LOCAL(SVGElementRareDataMap, rareDataMap, ());
+        return rareDataMap;
+    }
+
+    static SVGElementRareData* rareDataFromMap(const SVGElement* element)
+    {
+        return rareDataMap().get(element);
+    }
+
+    HashSet<SVGElementInstance*>& elementInstances() { return m_elementInstances; }
+    const HashSet<SVGElementInstance*>& elementInstances() const { return m_elementInstances; }
+
+    bool instanceUpdatesBlocked() const { return m_instancesUpdatesBlocked; }
+    void setInstanceUpdatesBlocked(bool value) { m_instancesUpdatesBlocked = value; }
+
+    SVGCursorElement* cursorElement() const { return m_cursorElement; }
+    void setCursorElement(SVGCursorElement* cursorElement) { m_cursorElement = cursorElement; }
+
+    CSSCursorImageValue* cursorImageValue() const { return m_cursorImageValue; }
+    void setCursorImageValue(CSSCursorImageValue* cursorImageValue) { m_cursorImageValue = cursorImageValue; }
+
+private:
+    HashSet<SVGElementInstance*> m_elementInstances;
+    SVGCursorElement* m_cursorElement;
+    CSSCursorImageValue* m_cursorImageValue;
+    bool m_instancesUpdatesBlocked : 1;
+};
+
+}
+
+#endif