[Sync] Propagate XMPP auth errors to SyncNotifierObservers

sync/internal_api/public/sync_manager.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.
 
 #ifndef SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_H_
 #define SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 514 matching lines @@
   // be enabled.
   // Note: opens a transaction.  May be called on any thread.
   bool ReceivedExperiment(browser_sync::Experiments* experiments) const;
 
   // Uses a read-only transaction to determine if the directory being synced has
   // any remaining unsynced items.  May be called on any thread.
   bool HasUnsyncedItems() const;
 
   // Functions used for testing.
 
-  void TriggerOnNotificationStateChangeForTest(
-      bool notifications_enabled);
+  void SimulateEnableNotificationsForTest();
+
+  void SimulateDisableNotificationsForTest(int reason);
 
   void TriggerOnIncomingNotificationForTest(
       syncable::ModelTypeSet model_types);
 
   static const int kDefaultNudgeDelayMilliseconds;
   static const int kPreferencesNudgeDelayMilliseconds;
   static const int kPiggybackNudgeDelay;
 
   static const FilePath::CharType kSyncDatabaseFilename[];
 
@@ skipping 24 matching lines @@
     sync_api::UserShare* share);
 
 const char* ConnectionStatusToString(ConnectionStatus status);
 
 // Returns the string representation of a PassphraseRequiredReason value.
 const char* PassphraseRequiredReasonToString(PassphraseRequiredReason reason);
 
 }  // namespace sync_api
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_H_