Handlify JSObject::MigrateInstance and friends.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index b53795831ca2809ffee69d5b5e7dc2b3c6813a95..637e1bedea9779f6f9438afd2046505c1f7e6267 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1535,19 +1535,6 @@ MaybeObject* JSObject::ResetElements() {
 }
 
 
-MaybeObject* JSObject::TryMigrateInstance() {
-  Map* new_map = map()->CurrentMapForDeprecated();
-  if (new_map == NULL) return Smi::FromInt(0);
-  Map* original_map = map();
-  MaybeObject* maybe_result = MigrateToMap(new_map);
-  JSObject* result;
-  if (FLAG_trace_migration && maybe_result->To(&result)) {
-    PrintInstanceMigration(stdout, original_map, result->map());
-  }
-  return maybe_result;
-}
-
-
 Handle<String> JSObject::ExpectedTransitionKey(Handle<Map> map) {
   DisallowHeapAllocation no_gc;
   if (!map->HasTransitionArray()) return Handle<String>::null();