[Sync] Make directory types registration explicit in ModelTypeRegistry

components/sync/driver/model_type_controller_unittest.cc

Index: components/sync/driver/model_type_controller_unittest.cc
diff --git a/components/sync/driver/model_type_controller_unittest.cc b/components/sync/driver/model_type_controller_unittest.cc
index bf7ef71eb664908c0fb96e42e80d03b9070378d9..3e927f8af434c14bef2fcdbf29c8ef200b7e088d 100644
--- a/components/sync/driver/model_type_controller_unittest.cc
+++ b/components/sync/driver/model_type_controller_unittest.cc
@@ -92,6 +92,14 @@ class TestModelTypeConfigurer : public ModelTypeConfigurer {
     NOTREACHED() << "Not implemented.";
   }
 
+  void RegisterDirectoryDataType(ModelType type,
+                                 ModelSafeGroup group) override {
+    NOTREACHED() << "Not implemented.";
+  }
+  void UnregisterDirectoryDataType(ModelType type) override {

[maxbogue, 2017/01/19 19:19:54]

newline above for consistency?

[pavely, 2017/01/19 20:27:39]

Done.

+    NOTREACHED() << "Not implemented.";
+  }
+
   void ActivateDirectoryDataType(ModelType type,
                                  ModelSafeGroup group,
                                  ChangeProcessor* change_processor) override {