Oilpan: avoid leak on creating shadow document wrapper.

Source/bindings/v8/V8DOMWrapper.cpp

 /*
  * 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 46 matching lines @@
     }
 
     v8::Local<v8::Function> shadowConstructor = shadowTemplate->GetFunction();
     if (shadowConstructor.IsEmpty())
         return v8::Local<v8::Object>();
 
     v8::Local<v8::Object> shadow = V8ScriptRunner::instantiateObject(isolate, shadowConstructor);
     if (shadow.IsEmpty())
         return v8::Local<v8::Object>();
     shadow->SetPrototype(wrapper);
-    V8DOMWrapper::setNativeInfo(wrapper, &V8HTMLDocument::wrapperTypeInfo, impl);
+    V8DOMWrapper::setNativeInfoForHiddenWrapper(wrapper, &V8HTMLDocument::wrapperTypeInfo, impl);
     return shadow;
 }
 
 v8::Local<v8::Object> V8DOMWrapper::createWrapper(v8::Handle<v8::Object> creationContext, const WrapperTypeInfo* type, void* impl, v8::Isolate* isolate)
 {
     V8WrapperInstantiationScope scope(creationContext, isolate);
 
     V8PerContextData* perContextData = V8PerContextData::from(scope.context());
     v8::Local<v8::Object> wrapper = perContextData ? perContextData->createWrapperFromCache(type) : V8ObjectConstructor::newInstance(isolate, type->domTemplate(isolate)->GetFunction());
 
@@ skipping 15 matching lines @@
     ASSERT(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex));
     ASSERT(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperTypeIndex));
 
     const WrapperTypeInfo* typeInfo = static_cast<const WrapperTypeInfo*>(wrapper->GetAlignedPointerFromInternalField(v8DOMWrapperTypeIndex));
     // FIXME: We should add a more strict way to check if the typeInfo is a typeInfo of some DOM wrapper.
     // Even if it's a typeInfo of Blink, it's not guaranteed that it's a typeInfo of a DOM wrapper.
     return typeInfo->ginEmbedder == gin::kEmbedderBlink;
 }
 
 }  // namespace WebCore