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

sync/notifier/invalidation_notifier_unittest.cc

Index: sync/notifier/invalidation_notifier_unittest.cc
diff --git a/sync/notifier/invalidation_notifier_unittest.cc b/sync/notifier/invalidation_notifier_unittest.cc
index 4265f7e3dc4aaef6694b5db02e90954e634159e7..2e94420895b90a949ed56ab8c79c3be1658dfc9d 100644
--- a/sync/notifier/invalidation_notifier_unittest.cc
+++ b/sync/notifier/invalidation_notifier_unittest.cc
@@ -64,20 +64,16 @@ class InvalidationNotifierTestDelegate {
     message_loop_.RunAllPending();
   }
 
-  void TriggerOnNotificationsEnabled() {
-    invalidator_->OnNotificationsEnabled();
+  void TriggerOnInvalidatorStateChange(InvalidatorState state) {
+    invalidator_->OnInvalidatorStateChange(state);
   }
 
-  void TriggerOnIncomingNotification(const ObjectIdStateMap& id_state_map,
-                                     IncomingNotificationSource source) {
+  void TriggerOnIncomingInvalidation(const ObjectIdStateMap& id_state_map,
+                                     IncomingInvalidationSource source) {
     // None of the tests actually care about |source|.
     invalidator_->OnInvalidate(id_state_map);
   }
 
-  void TriggerOnNotificationsDisabled(NotificationsDisabledReason reason) {
-    invalidator_->OnNotificationsDisabled(reason);
-  }
-
   static bool InvalidatorHandlesDeprecatedState() {
     return true;
   }