[runtime] Add MapUpdater class that manages all kinds of map updates.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 244e66d4d116514df95ea8d47bc4e25345218c98..c855b93d54fc3f079eb3365fb2ad0d668f9286ca 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -3025,26 +3025,6 @@ FixedArrayBase* Map::GetInitialElements() {
   return result;
 }
 
-// static
-Handle<Map> Map::ReconfigureProperty(Handle<Map> map, int modify_index,
-                                     PropertyKind new_kind,
-                                     PropertyAttributes new_attributes,
-                                     Representation new_representation,
-                                     Handle<FieldType> new_field_type,
-                                     StoreMode store_mode) {
-  return Reconfigure(map, map->elements_kind(), modify_index, new_kind,
-                     new_attributes, new_representation, new_field_type,
-                     store_mode);
-}
-
-// static
-Handle<Map> Map::ReconfigureElementsKind(Handle<Map> map,
-                                         ElementsKind new_elements_kind) {
-  return Reconfigure(map, new_elements_kind, -1, kData, NONE,
-                     Representation::None(), FieldType::None(map->GetIsolate()),
-                     ALLOW_IN_DESCRIPTOR);
-}
-
 Object** DescriptorArray::GetKeySlot(int descriptor_number) {
   DCHECK(descriptor_number < number_of_descriptors());
   return RawFieldOfElementAt(ToKeyIndex(descriptor_number));