Remove dead GeneralizeFieldRepresentation

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index b95787fe16df3f97202c6d716c5e32c33cf6bd45..07ad6f14767fa0520bcca149fd26726e0231fef6 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -2161,17 +2161,6 @@ void JSObject::MigrateFastToFast(Handle<JSObject> object, Handle<Map> new_map) {
 }
 
 
-void JSObject::GeneralizeFieldRepresentation(Handle<JSObject> object,
-                                             int modify_index,
-                                             Representation new_representation,
-                                             Handle<HeapType> new_field_type) {
-  Handle<Map> new_map = Map::GeneralizeRepresentation(
-      handle(object->map()), modify_index, new_representation, new_field_type,
-      FORCE_FIELD);
-  MigrateToMap(object, new_map);
-}
-
-
 int Map::NumberOfFields() {
   DescriptorArray* descriptors = instance_descriptors();
   int result = 0;