Remove almost all of Oilpan

sky/engine/bindings/core/v8/DOMWrapperWorld.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DOMWrapperWorld_h
 #define DOMWrapperWorld_h
 
 #include "bindings/core/v8/ScriptState.h"
+#include "wtf/HashSet.h"
 #include "wtf/MainThread.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/WTFString.h"
 #include <v8.h>
 
 namespace blink {
 
 class DOMDataStore;
@@ skipping 89 matching lines @@
             return adoptPtr(new DOMObjectHolder(isolate, object, wrapper));
         }
 
     private:
         DOMObjectHolder(v8::Isolate* isolate, T* object, v8::Handle<v8::Value> wrapper)
             : DOMObjectHolderBase(isolate, wrapper)
             , m_object(object)
         {
         }
 
-        Persistent<T> m_object;
+        OwnPtr<T> m_object;
     };
 
 public:
     template<typename T>
     void registerDOMObjectHolder(v8::Isolate* isolate, T* object, v8::Handle<v8::Value> wrapper)
     {
         registerDOMObjectHolderInternal(DOMObjectHolder<T>::create(isolate, object, wrapper));
     }
 
 private:
     DOMWrapperWorld(int worldId, int extensionGroup);
 
     static void weakCallbackForDOMObjectHolder(const v8::WeakCallbackData<v8::Value, DOMObjectHolderBase>&);
     void registerDOMObjectHolderInternal(PassOwnPtr<DOMObjectHolderBase>);
     void unregisterDOMObjectHolder(DOMObjectHolderBase*);
 
     static unsigned isolatedWorldCount;
     static DOMWrapperWorld* worldOfInitializingWindow;
 
     const int m_worldId;
     const int m_extensionGroup;
     OwnPtr<DOMDataStore> m_domDataStore;
     HashSet<OwnPtr<DOMObjectHolderBase> > m_domObjectHolders;
 };
 
 } // namespace blink
 
 #endif // DOMWrapperWorld_h