[Sync] Propagate XMPP auth errors to SyncNotifierObservers

sync/notifier/non_blocking_invalidation_notifier.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // An implementation of SyncNotifier that wraps InvalidationNotifier
 // on its own thread.
 
 #ifndef SYNC_NOTIFIER_NON_BLOCKING_INVALIDATION_NOTIFIER_H_
 #define SYNC_NOTIFIER_NON_BLOCKING_INVALIDATION_NOTIFIER_H_
 #pragma once
@@ skipping 42 matching lines @@
       const std::string& email, const std::string& token) OVERRIDE;
   virtual void UpdateEnabledTypes(
       syncable::ModelTypeSet enabled_types) OVERRIDE;
   virtual void SendNotification(
       syncable::ModelTypeSet changed_types) OVERRIDE;
 
   // SyncNotifierObserver implementation.
   virtual void OnIncomingNotification(
       const syncable::ModelTypePayloadMap& type_payloads,
       IncomingNotificationSource source) OVERRIDE;
-  virtual void OnNotificationStateChange(bool notifications_enabled) OVERRIDE;
+  virtual void OnSyncNotifierStateChange(
+      SyncNotifierState sync_notifier_state) OVERRIDE;
 
  private:
   class Core;
 
   base::WeakPtrFactory<NonBlockingInvalidationNotifier> weak_ptr_factory_;
 
   // Our observers (which must live on the parent thread).
   ObserverList<SyncNotifierObserver> observers_;
 
   // The real guts of NonBlockingInvalidationNotifier, which allows
   // this class to live completely on the parent thread.
   scoped_refptr<Core> core_;
   scoped_refptr<base::MessageLoopProxy> parent_message_loop_proxy_;
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(NonBlockingInvalidationNotifier);
 };
 
 }  // namespace sync_notifier
 
 #endif  // SYNC_NOTIFIER_NON_BLOCKING_INVALIDATION_NOTIFIER_H_