Revert 157959 "Introduce a new reference graph to SVG*TearOffs."

Source/core/svg/properties/SVGAnimatedProperty.h

 /*
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2013 Samsung Electronics. 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,
@@ skipping 13 matching lines @@
 #include "core/svg/properties/SVGAnimatedPropertyDescription.h"
 #include "core/svg/properties/SVGPropertyInfo.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class SVGElement;
 
 class SVGAnimatedProperty : public RefCounted<SVGAnimatedProperty> {
 public:
-    SVGElement* contextElement() const { return m_contextElement; }
-    void resetContextElement() { m_contextElement = 0; }
+    SVGElement* contextElement() const { return m_contextElement.get(); }
     const QualifiedName& attributeName() const { return m_attributeName; }
     AnimatedPropertyType animatedPropertyType() const { return m_animatedPropertyType; }
     bool isAnimating() const { return m_isAnimating; }
     bool isReadOnly() const { return m_isReadOnly; }
     void setIsReadOnly() { m_isReadOnly = true; }
 
     void commitChange();
 
     virtual bool isAnimatedListTearOff() const { return false; }
-    virtual void detachWrappers() { }
 
     // Caching facilities.
-    typedef HashMap<SVGAnimatedPropertyDescription, RefPtr<SVGAnimatedProperty>, SVGAnimatedPropertyDescriptionHash, SVGAnimatedPropertyDescriptionHashTraits> Cache;
+    typedef HashMap<SVGAnimatedPropertyDescription, SVGAnimatedProperty*, SVGAnimatedPropertyDescriptionHash, SVGAnimatedPropertyDescriptionHashTraits> Cache;
 
     virtual ~SVGAnimatedProperty();
 
     template<typename OwnerType, typename TearOffType, typename PropertyType>
     static PassRefPtr<TearOffType> lookupOrCreateWrapper(OwnerType* element, const SVGPropertyInfo* info, PropertyType& property)
     {
         ASSERT(info);
         SVGAnimatedPropertyDescription key(element, info->propertyIdentifier);
         RefPtr<SVGAnimatedProperty> wrapper = animatedPropertyCache()->get(key);
         if (!wrapper) {
             wrapper = TearOffType::create(element, info->attributeName, info->animatedPropertyType, property);
             if (info->animatedPropertyState == PropertyIsReadOnly)
                 wrapper->setIsReadOnly();
-            animatedPropertyCache()->set(key, wrapper);
+            animatedPropertyCache()->set(key, wrapper.get());
         }
         return static_pointer_cast<TearOffType>(wrapper);
     }
 
     template<typename OwnerType, typename TearOffType>
     static TearOffType* lookupWrapper(OwnerType* element, const SVGPropertyInfo* info)
     {
         ASSERT(info);
         SVGAnimatedPropertyDescription key(element, info->propertyIdentifier);
         return static_cast<TearOffType*>(animatedPropertyCache()->get(key));
     }
 
     template<typename OwnerType, typename TearOffType>
     static TearOffType* lookupWrapper(const OwnerType* element, const SVGPropertyInfo* info)
     {
         return lookupWrapper<OwnerType, TearOffType>(const_cast<OwnerType*>(element), info);
     }
 
-    static void detachAnimatedPropertiesWrappersForElement(SVGElement*);
-    static void detachAnimatedPropertiesForElement(SVGElement*);
-
 protected:
     SVGAnimatedProperty(SVGElement*, const QualifiedName&, AnimatedPropertyType);
 
 private:
     static Cache* animatedPropertyCache();
 
-    SVGElement* m_contextElement;
+    RefPtr<SVGElement> m_contextElement;
     const QualifiedName& m_attributeName;
     AnimatedPropertyType m_animatedPropertyType;
 
 protected:
     bool m_isAnimating;
     bool m_isReadOnly;
 };
 
 }
 
 #endif // SVGAnimatedProperty_h