Enable calling the SetReference* & SetObjectGroupId functions with a Persistent<SubclassOfValue>.

src/api.cc

 // Copyright 2012 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 6332 matching lines @@
   // to deal more gracefully with out of memory situations.
   if (value.IsEmpty()) {
     isolate->ScheduleThrow(isolate->heap()->undefined_value());
   } else {
     isolate->ScheduleThrow(*Utils::OpenHandle(*value));
   }
   return v8::Undefined(reinterpret_cast<v8::Isolate*>(isolate));
 }
 
 
-void Isolate::SetObjectGroupId(const Persistent<Value>& object,
-                               UniqueId id) {
+void Isolate::SetObjectGroupId(internal::Object** object, UniqueId id) {
   i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
   internal_isolate->global_handles()->SetObjectGroupId(
-      Utils::OpenPersistent(object).location(),
+      v8::internal::Handle<v8::internal::Object>(object).location(),
       id);
+  internal_isolate->global_handles()->SetObjectGroupId(object, id);
 }
 
 
-void Isolate::SetReferenceFromGroup(UniqueId id,
-                                    const Persistent<Value>& object) {
+void Isolate::SetReferenceFromGroup(UniqueId id, internal::Object** object) {
   i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
   internal_isolate->global_handles()->SetReferenceFromGroup(
       id,
-      Utils::OpenPersistent(object).location());
+      v8::internal::Handle<v8::internal::Object>(object).location());
+  internal_isolate->global_handles()->SetReferenceFromGroup(id, object);
 }
 
 
-void Isolate::SetReference(const Persistent<Object>& parent,
-                           const Persistent<Value>& child) {
+void Isolate::SetReference(internal::Object** parent,
+                           internal::Object** child) {
   i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(this);
-  i::Object** parent_location = Utils::OpenPersistent(parent).location();
+  i::Object** parent_location =
+      v8::internal::Handle<v8::internal::Object>(parent).location();
   internal_isolate->global_handles()->SetReference(
       reinterpret_cast<i::HeapObject**>(parent_location),
-      Utils::OpenPersistent(child).location());
+      v8::internal::Handle<v8::internal::Object>(child).location());
 }
 
 
 void Isolate::AddGCPrologueCallback(GCPrologueCallback callback,
                                     GCType gc_type) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   isolate->heap()->AddGCPrologueCallback(callback, gc_type);
 }
 
 
@@ skipping 1156 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal