Phantom references support internal fields

src/global-handles.h

Index: src/global-handles.h
diff --git a/src/global-handles.h b/src/global-handles.h
index aacdcbc072d0ae26af7ce6264767d8366ee17f7a..f6fc0b017c4db2e72d745a5b1ffc74be840b39cd 100644
--- a/src/global-handles.h
+++ b/src/global-handles.h
@@ -111,6 +111,7 @@ class GlobalHandles {
   static void Destroy(Object** location);
 
   typedef WeakCallbackData<v8::Value, void>::Callback WeakCallback;
+  typedef PhantomCallbackData<void>::Callback PhantomCallback;
 
   // For a phantom weak reference, the callback does not have access to the
   // dying object.  Phantom weak references are preferred because they allow
@@ -128,8 +129,12 @@ class GlobalHandles {
   // before the callback is invoked, but the handle can still be identified
   // in the callback by using the location() of the handle.
   static void MakeWeak(Object** location, void* parameter,
-                       WeakCallback weak_callback,
-                       PhantomState phantom = Nonphantom);
+                       WeakCallback weak_callback);
+
+  static void MakePhantom(Object** location, void* parameter,
+                          PhantomCallback weak_callback,
+                          int internal_field_index1 = v8::Object::kNoInternalFieldIndex,
+                          int internal_field_index2 = v8::Object::kNoInternalFieldIndex);
 
   void RecordStats(HeapStats* stats);