Fix lifetime handling of SVGPropertyTearOffs.

Source/core/svg/properties/SVGStaticPropertyWithParentTearOff.h

-/*
- * 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 SVGStaticPropertyWithParentTearOff_h
-#define SVGStaticPropertyWithParentTearOff_h
-
-#include "core/svg/properties/SVGPropertyTearOff.h"
-
-namespace WebCore {
-
-#if COMPILER(MSVC)
-// UpdateMethod is 12 bytes. We have to pack to a size greater than or equal to that to avoid an
-// alignment warning (C4121). 16 is the next-largest size allowed for packing, so we use that.
-#pragma pack(push, 16)
-#endif
-template<typename ParentType, typename PropertyType>
-class SVGStaticPropertyWithParentTearOff : public SVGPropertyTearOff<PropertyType> {
-public:
-    typedef SVGStaticPropertyWithParentTearOff<ParentType, PropertyType> Self;
-    typedef void (ParentType::*UpdateMethod)();
-
-    // Used for non-animated POD types that are not associated with a SVGAnimatedProperty object, nor with a XML DOM attribute
-    // and that contain a parent type that's exposed to the bindings via a SVGStaticPropertyTearOff object
-    // (for example: SVGTransform::matrix).
-    static PassRefPtr<Self> create(SVGProperty* parent, PropertyType& value, UpdateMethod update)
-    {
-        ASSERT(parent);
-        return adoptRef(new Self(parent, value, update));
-    }
-
-    virtual void commitChange()
-    {
-        (static_cast<SVGPropertyTearOff<ParentType>*>(m_parent.get())->propertyReference().*m_update)();
-        m_parent->commitChange();
-    }
-
-private:
-    SVGStaticPropertyWithParentTearOff(SVGProperty* parent, PropertyType& value, UpdateMethod update)
-        : SVGPropertyTearOff<PropertyType>(0, UndefinedRole, value)
-        , m_update(update)
-        , m_parent(parent)
-    {
-    }
-
-    UpdateMethod m_update;
-    RefPtr<SVGProperty> m_parent;
-};
-#if COMPILER(MSVC)
-#pragma pack(pop)
-#endif
-
-}
-
-#endif // SVGStaticPropertyWithParentTearOff_h