Oilpan: move DOMWindow object to the oilpan heap.

Source/bindings/v8/V8DOMWrapper.h

Index: Source/bindings/v8/V8DOMWrapper.h
diff --git a/Source/bindings/v8/V8DOMWrapper.h b/Source/bindings/v8/V8DOMWrapper.h
index 589599613bd9f94db0b21463db2470d7bfccc05f..5e8a0dadfc5205d57da4b33107909d3fdf7ca083 100644
--- a/Source/bindings/v8/V8DOMWrapper.h
+++ b/Source/bindings/v8/V8DOMWrapper.h
@@ -52,6 +52,7 @@ struct WrapperTypeInfo;
         template<typename V8T, typename T>
         static inline v8::Handle<v8::Object> associateObjectWithWrapper(T*, const WrapperTypeInfo*, v8::Handle<v8::Object>, v8::Isolate*, WrapperConfiguration::Lifetime);
         static inline void setNativeInfo(v8::Handle<v8::Object>, const WrapperTypeInfo*, void*);
+        static inline void setNativeInfoForHiddenWrapper(v8::Handle<v8::Object>, const WrapperTypeInfo*, void*);
         static inline void setNativeInfoWithPersistentHandle(v8::Handle<v8::Object>, const WrapperTypeInfo*, void*, PersistentNode*);
         static inline void clearNativeInfo(v8::Handle<v8::Object>, const WrapperTypeInfo*);
 
@@ -70,6 +71,22 @@ struct WrapperTypeInfo;
         wrapper->SetAlignedPointerInInternalField(v8DOMWrapperTypeIndex, const_cast<WrapperTypeInfo*>(type));
     }
 
+    inline void V8DOMWrapper::setNativeInfoForHiddenWrapper(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* type, void* object)
+    {
+        // see V8WindowShell::installDOMWindow() comment for why this version is needed and safe.
+        ASSERT(wrapper->InternalFieldCount() >= 2);
+        ASSERT(object);
+        ASSERT(type);
+#if ENABLE(OILPAN)
+        ASSERT(type->isGarbageCollected);
+#endif
+        wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, object);
+        wrapper->SetAlignedPointerInInternalField(v8DOMWrapperTypeIndex, const_cast<WrapperTypeInfo*>(type));
+        // Clear out the last internal field, which is assumed to contain a valid persistent pointer value.
+        wrapper->SetAlignedPointerInInternalField(wrapper->InternalFieldCount() - 1, 0);
+    }
+
+
     inline void V8DOMWrapper::setNativeInfoWithPersistentHandle(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* type, void* object, PersistentNode* handle)
     {
         ASSERT(wrapper->InternalFieldCount() >= 3);