[Invalidations] Add GetInvalidatorState() to Invalidator{,Frontend}

sync/notifier/fake_invalidator.cc

Index: sync/notifier/fake_invalidator.cc
diff --git a/sync/notifier/fake_invalidator.cc b/sync/notifier/fake_invalidator.cc
index 7468dae06cf78c686caada0ac9e0619a07e5eef6..c2b71350e03c9f4e491bcee2acb31f6364c69566 100644
--- a/sync/notifier/fake_invalidator.cc
+++ b/sync/notifier/fake_invalidator.cc
@@ -39,21 +39,16 @@ const ObjectIdStateMap& FakeInvalidator::GetLastSentIdStateMap() const {
   return last_sent_id_state_map_;
 }
 
-void FakeInvalidator::EmitOnNotificationsEnabled() {
-  registrar_.EmitOnNotificationsEnabled();
+void FakeInvalidator::EmitOnInvalidatorStateChange(InvalidatorState state) {
+  registrar_.UpdateInvalidatorState(state);
 }
 
-void FakeInvalidator::EmitOnIncomingNotification(
+void FakeInvalidator::EmitOnIncomingInvalidation(
     const ObjectIdStateMap& id_state_map,
-    IncomingNotificationSource source) {
+    IncomingInvalidationSource source) {
   registrar_.DispatchInvalidationsToHandlers(id_state_map, source);
 }
 
-void FakeInvalidator::EmitOnNotificationsDisabled(
-    NotificationsDisabledReason reason) {
-  registrar_.EmitOnNotificationsDisabled(reason);
-}
-
 void FakeInvalidator::RegisterHandler(InvalidationHandler* handler) {
   registrar_.RegisterHandler(handler);
 }
@@ -67,6 +62,10 @@ void FakeInvalidator::UnregisterHandler(InvalidationHandler* handler) {
   registrar_.UnregisterHandler(handler);
 }
 
+InvalidatorState FakeInvalidator::GetInvalidatorState() const {
+  return registrar_.GetInvalidatorState();
+}
+
 void FakeInvalidator::SetUniqueId(const std::string& unique_id) {
   unique_id_ = unique_id;
 }
@@ -81,7 +80,7 @@ void FakeInvalidator::UpdateCredentials(
   token_ = token;
 }
 
-void FakeInvalidator::SendNotification(const ObjectIdStateMap& id_state_map) {
+void FakeInvalidator::SendInvalidation(const ObjectIdStateMap& id_state_map) {
   last_sent_id_state_map_ = id_state_map;
 }