Use new phantom handles for ScriptWrappable.

Source/bindings/core/v8/V8ValueCache.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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 28 matching lines @@
 public:
     // Weak traits:
     typedef StringImpl WeakCallbackDataType;
     typedef v8::PersistentValueMap<StringImpl*, v8::String, StringCacheMapTraits> MapType;
 
     static WeakCallbackDataType* WeakCallbackParameter(
         MapType* map, StringImpl* key, v8::Local<v8::String>& value) { return key; }
     static void DisposeCallbackData(WeakCallbackDataType* callbackData) { }
 
     static MapType* MapFromWeakCallbackData(
-        const v8::WeakCallbackData<v8::String, WeakCallbackDataType>&);
+        const v8::PhantomCallbackData<WeakCallbackDataType>&);
 
     static StringImpl* KeyFromWeakCallbackData(
-        const v8::WeakCallbackData<v8::String, WeakCallbackDataType>& data)
+        const v8::PhantomCallbackData<WeakCallbackDataType>& data)
     {
         return data.GetParameter();
     }
 
     static void Dispose(v8::Isolate*, v8::UniquePersistent<v8::String> value, StringImpl* key);
 };
 
 
 class StringCache {
 public:
@@ skipping 30 matching lines @@
 
     // Note: RefPtr is a must as we cache by StringImpl* equality, not identity
     // hence lastStringImpl might be not a key of the cache (in sense of identity)
     // and hence it's not refed on addition.
     RefPtr<StringImpl> m_lastStringImpl;
 };
 
 } // namespace blink
 
 #endif // V8ValueCache_h