Rename ModelType/ObjectIdStateMap to InvalidationMap.

sync/internal_api/debug_info_event_listener.cc

Index: sync/internal_api/debug_info_event_listener.cc
diff --git a/sync/internal_api/debug_info_event_listener.cc b/sync/internal_api/debug_info_event_listener.cc
index 5f06954769589c26820919992b530ef297adc528..58eba87b4696caf1d3a884a3a39a9f96553f7333 100644
--- a/sync/internal_api/debug_info_event_listener.cc
+++ b/sync/internal_api/debug_info_event_listener.cc
@@ -118,9 +118,9 @@ void DebugInfoEventListener::OnNudgeFromDatatype(ModelType datatype) {
 }
 
 void DebugInfoEventListener::OnIncomingNotification(
-     const ModelTypeStateMap& type_state_map) {
+     const ModelTypeInvalidationMap& invalidation_map) {
   sync_pb::DebugEventInfo event_info;
-  ModelTypeSet types = ModelTypeStateMapToSet(type_state_map);
+  ModelTypeSet types = ModelTypeInvalidationMapToSet(invalidation_map);
 
   for (ModelTypeSet::Iterator it = types.First(); it.Good(); it.Inc()) {
     event_info.add_datatypes_notified_from_server(