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

chrome/browser/sync/glue/sync_backend_host.h

Index: chrome/browser/sync/glue/sync_backend_host.h
diff --git a/chrome/browser/sync/glue/sync_backend_host.h b/chrome/browser/sync/glue/sync_backend_host.h
index 1d663815b77b4d5273ff2a6cd5812791012c5143..0faadf6b2c0b2ff0b6e7148697d8936177575085 100644
--- a/chrome/browser/sync/glue/sync_backend_host.h
+++ b/chrome/browser/sync/glue/sync_backend_host.h
@@ -466,12 +466,11 @@ class SyncBackendHost : public BackendDataTypeConfigurer {
       syncer::ModelTypeSet failed_configuration_types);
 
   // syncer::InvalidationHandler-like functions.
-  void HandleNotificationsEnabledOnFrontendLoop();
-  void HandleNotificationsDisabledOnFrontendLoop(
-      syncer::NotificationsDisabledReason reason);
-  void HandleIncomingNotificationOnFrontendLoop(
+  void HandleInvalidatorStateChangeOnFrontendLoop(
+      syncer::InvalidatorState state);
+  void HandleIncomingInvalidationOnFrontendLoop(
       const syncer::ObjectIdStateMap& id_state_map,
-      syncer::IncomingNotificationSource source);
+      syncer::IncomingInvalidationSource source);
 
   // Handles stopping the core's SyncManager, accounting for whether
   // initialization is done yet.