Add RegisterExternallyReferencedObject to PersistenValueMap

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index bc6edf5cea8ab4bb2d64e7716c8a8ddbb0fcd133..182eef790ba8b7becee7fe7d01a610ac8c839c5c 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -6632,8 +6632,6 @@ class V8_EXPORT V8 {
   static internal::Object** CopyPersistent(internal::Object** handle);
   static void DisposeGlobal(internal::Object** global_handle);
   typedef WeakCallbackData<Value, void>::Callback WeakCallback;
-  static void RegisterExternallyReferencedObject(internal::Object** object,
-                                                 internal::Isolate* isolate);
   static void MakeWeak(internal::Object** global_handle, void* data,
                        WeakCallback weak_callback);
   static void MakeWeak(internal::Object** global_handle, void* data,
@@ -6651,6 +6649,11 @@ class V8_EXPORT V8 {
                          int* index);
   static Local<Value> GetEternal(Isolate* isolate, int index);
 
+  static void RegisterExternallyReferencedObject(internal::Object** object,
+                                                 internal::Isolate* isolate);
+  template <class K, class V, class T>
+  friend class PersistentValueMapBase;
+
   static void FromJustIsNothing();
   static void ToLocalEmpty();
   static void InternalFieldOutOfBounds(int index);