Map::MigrateToMap() now supports fast case (transition from a map that has run out of property spac…

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 7d0791290bae786aad30f90f1ebe84b3cf50c533..025ee702250c7f27f63bfaad8c87363a4a632d15 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2631,6 +2631,10 @@ class JSObject: public JSReceiver {
                                   Handle<Name> name,
                                   Handle<Object> old_value);
 
+  static void MigrateToNewProperty(Handle<JSObject> object,
+                                   Handle<Map> transition,
+                                   Handle<Object> value);
+
  private:
   friend class DictionaryElementsAccessor;
   friend class JSReceiver;
@@ -2758,10 +2762,6 @@ class JSObject: public JSReceiver {
                               ValueType value_type,
                               TransitionFlag flag);
 
-  static void MigrateToNewProperty(Handle<JSObject> object,
-                                   Handle<Map> transition,
-                                   Handle<Object> value);
-
   // Add a property to a slow-case object.
   static void AddSlowProperty(Handle<JSObject> object,
                               Handle<Name> name,