[Sync] Moving DataTypeState to proto for serialization

sync/internal_api/test/fake_metadata_change_list.cc

Index: sync/internal_api/test/fake_metadata_change_list.cc
diff --git a/sync/internal_api/test/fake_metadata_change_list.cc b/sync/internal_api/test/fake_metadata_change_list.cc
index 407066d7b368700ef528722612fd8329a36c17a7..ceba2cb4dc5b6651da57a114798f267b1d92c9ad 100644
--- a/sync/internal_api/test/fake_metadata_change_list.cc
+++ b/sync/internal_api/test/fake_metadata_change_list.cc
@@ -17,7 +17,7 @@ FakeMetadataChangeList::Record::Record() {}
 FakeMetadataChangeList::Record::~Record() {}
 
 void FakeMetadataChangeList::UpdateDataTypeState(
-    const DataTypeState& data_type_state) {
+    const sync_pb::DataTypeState& data_type_state) {
   Record record;
   record.action = UPDATE_DATA_TYPE_STATE;
   record.data_type_state = data_type_state;