suppress user/password dialog when re-enabling sync

chrome/browser/sync/profile_sync_service.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 CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 #pragma once
 
 #include <list>
 #include <string>
@@ skipping 465 matching lines @@
   // any model-modifying operations.
   bool ShouldPushChanges();
 
   const GURL& sync_service_url() const { return sync_service_url_; }
   bool auto_start_enabled() const { return auto_start_enabled_; }
   SigninManager* signin() const { return signin_; }
 
   // Stops the sync backend and sets the flag for suppressing sync startup.
   void StopAndSuppress();
 
+  // Resets the flag for suppressing sync startup.
+  void Unsuppress();
+
   // Resets the flag for suppressing sync startup and starts the sync backend.
   void UnsuppressAndStart();
 
   // Marks all currently registered types as "acknowledged" so we won't prompt
   // the user about them any more.
   void AcknowledgeSyncedTypes();
 
   SyncGlobalError* sync_global_error() { return sync_global_error_.get(); }
 
   virtual const FailedDatatypesHandler& failed_datatypes_handler();
@@ skipping 241 matching lines @@
   bool setup_in_progress_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 bool ShouldShowActionOnUI(
     const browser_sync::SyncProtocolError& error);
 
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_