Renamed ConvertDescriptorToFieldAndMapTransition to ConvertTransitionToMapTransition, and let it re…

src/objects-inl.h

 // 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 3510 matching lines @@
 Map* Map::elements_transition_map() {
   return transitions()->elements_transition();
 }
 
 
 MaybeObject* Map::AddTransition(String* key, Object* value) {
   if (HasTransitionArray()) return transitions()->CopyInsert(key, value);
   return TransitionArray::NewWith(key, value);
 }
 
+void Map::SetTransition(int transition_index, Object* value) {
+  transitions()->SetValue(transition_index, value);
+}
+
 
 // If the map is using the empty descriptor array, install a new empty
 // descriptor array that will contain an elements transition.
 static MaybeObject* AllowTransitions(Map* map) {
   if (map->instance_descriptors()->MayContainTransitions()) return map;
   DescriptorArray* descriptors;
   MaybeObject* maybe_descriptors =
       DescriptorArray::Allocate(0, DescriptorArray::CANNOT_BE_SHARED);
   if (!maybe_descriptors->To(&descriptors)) return maybe_descriptors;
   map->set_instance_descriptors(descriptors);
@@ skipping 1765 matching lines @@
 #undef WRITE_UINT32_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_