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diff --git a/src/3rdparty/webkit/WebCore/svg/SynchronizablePropertyController.h b/src/3rdparty/webkit/WebCore/svg/SynchronizablePropertyController.h
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+/*
+    Copyright (C) Research In Motion Limited 2009. 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 SynchronizablePropertyController_h
+#define SynchronizablePropertyController_h
+
+#if ENABLE(SVG)
+#include "StringHash.h"
+#include <wtf/HashMap.h>
+#include <wtf/HashSet.h>
+#include <wtf/Noncopyable.h>
+
+namespace WebCore {
+
+class QualifiedName;
+class SVGAnimatedPropertyBase;
+
+struct SynchronizableProperty {
+    SynchronizableProperty()
+        : base(0)
+        , shouldSynchronize(false)
+    {
+    }
+
+    explicit SynchronizableProperty(SVGAnimatedPropertyBase* _base)
+        : base(_base)
+        , shouldSynchronize(false)
+    {
+    }
+
+    explicit SynchronizableProperty(WTF::HashTableDeletedValueType)
+        : base(reinterpret_cast<SVGAnimatedPropertyBase*>(-1))
+        , shouldSynchronize(false)
+    {
+    }
+
+    bool isHashTableDeletedValue() const
+    {
+        return base == reinterpret_cast<SVGAnimatedPropertyBase*>(-1);
+    }
+
+    bool operator==(const SynchronizableProperty& other) const
+    {
+        return base == other.base && shouldSynchronize == other.shouldSynchronize;
+    }
+
+    SVGAnimatedPropertyBase* base;
+    bool shouldSynchronize;
+};
+
+struct SynchronizablePropertyHash {
+    static unsigned hash(const SynchronizableProperty& key)
+    {
+        return StringImpl::computeHash(reinterpret_cast<const UChar*>(&key), sizeof(SynchronizableProperty) / sizeof(UChar));
+    }
+
+    static bool equal(const SynchronizableProperty& a, const SynchronizableProperty& b)
+    {
+        return a == b;
+    }
+
+    static const bool safeToCompareToEmptyOrDeleted = true;
+};
+
+struct SynchronizablePropertyHashTraits : WTF::GenericHashTraits<SynchronizableProperty> {
+    static const bool emptyValueIsZero = true;
+
+    static void constructDeletedValue(SynchronizableProperty& slot)
+    {
+        new (&slot) SynchronizableProperty(WTF::HashTableDeletedValue);
+    }
+
+    static bool isDeletedValue(const SynchronizableProperty& value)
+    {
+        return value.isHashTableDeletedValue();
+    }
+};
+
+// Helper class used exclusively by SVGElement to keep track of all animatable properties within a SVGElement,
+// and wheter they are supposed to be synchronized or not (depending wheter AnimatedPropertyTearOff's have been created)
+class SynchronizablePropertyController : public Noncopyable {
+public:
+    void registerProperty(const QualifiedName&, SVGAnimatedPropertyBase*);
+    void setPropertyNeedsSynchronization(const QualifiedName&);
+
+    void synchronizeProperty(const String&);
+    void synchronizeAllProperties();
+
+    void startAnimation(const String&);
+    void stopAnimation(const String&);
+
+private:
+    friend class SVGElement;
+    SynchronizablePropertyController();
+
+private:
+    typedef HashSet<SynchronizableProperty, SynchronizablePropertyHash, SynchronizablePropertyHashTraits> Properties;
+    typedef HashMap<String, Properties> PropertyMap;
+
+    PropertyMap m_map;
+};
+
+};
+
+#endif // ENABLE(SVG)
+#endif // SynchronizablePropertyController_h