[Sync] Propagate XMPP auth errors to SyncNotifierObservers

sync/notifier/p2p_notifier.h

Index: sync/notifier/p2p_notifier.h
diff --git a/sync/notifier/p2p_notifier.h b/sync/notifier/p2p_notifier.h
index 341bc8b65eeaad9671859122072c31a39c651f86..adb4df27664419019790e58aa50b9237c26235fa 100644
--- a/sync/notifier/p2p_notifier.h
+++ b/sync/notifier/p2p_notifier.h
@@ -19,6 +19,7 @@
 #include "jingle/notifier/listener/push_client_observer.h"
 #include "sync/internal_api/public/syncable/model_type.h"
 #include "sync/notifier/sync_notifier.h"
+#include "sync/notifier/sync_notifier_state.h"
 
 namespace notifier {
 class PushClient;
@@ -107,7 +108,8 @@ class P2PNotifier
       syncable::ModelTypeSet changed_types) OVERRIDE;
 
   // PushClientObserver implementation.
-  virtual void OnNotificationStateChange(bool notifications_enabled) OVERRIDE;
+  virtual void OnPushClientStateChange(
+      notifier::PushClientState push_client_state) OVERRIDE;
   virtual void OnIncomingNotification(
       const notifier::Notification& notification) OVERRIDE;
 
@@ -127,9 +129,8 @@ class P2PNotifier
   std::string unique_id_;
   // Whether we have called UpdateCredentials() yet.
   bool logged_in_;
-  // Whether |push_client_| has notified us that notifications are
-  // enabled.
-  bool notifications_enabled_;
+  // The current state.
+  SyncNotifierState state_;
   // Which set of clients should be sent notifications.
   P2PNotificationTarget send_notification_target_;