Fix the sync sign in dialog issues for app notifications:

chrome/browser/sync/profile_sync_service.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/sync/profile_sync_service.h"
 
 #include <algorithm>
 #include <cstddef>
 #include <map>
 #include <set>
@@ skipping 1458 matching lines @@
       break;
     }
     case chrome::NOTIFICATION_TOKEN_AVAILABLE: {
       const TokenService::TokenAvailableDetails& token_details =
           *(content::Details<const TokenService::TokenAvailableDetails>(
               details).ptr());
       if (IsTokenServiceRelevant(token_details.service()) &&
           AreCredentialsAvailable(true)) {
         if (backend_initialized_) {
           backend_->UpdateCredentials(GetCredentials());
+          const GoogleServiceAuthError& last_error = GetAuthError();

[Andrew T Wilson (Slow), 2011/12/02 21:55:41]

Add a comment to explain why this needs to happen.

[Munjal (Google), 2011/12/03 01:25:33]

Done.

+          if (GoogleServiceAuthError::NONE == last_error.state())
+            OnAuthError();
         }
         if (!sync_prefs_.IsStartSuppressed())
           StartUp();
       }
       break;
     }
     case chrome::NOTIFICATION_TOKEN_LOADING_FINISHED: {
       // This notification gets fired when TokenService loads the tokens
       // from storage. Here we only check if the chromiumsync token is
       // available (versus both chromiumsync and oauth login tokens) to
@@ skipping 104 matching lines @@
              << "Unrecoverable error.";
   } else {
     DVLOG(0) << "ConfigureDataTypeManager not invoked because backend is not "
              << "initialized";
   }
 }
 
 const FailedDatatypesHandler& ProfileSyncService::failed_datatypes_handler() {
   return failed_datatypes_handler_;
 }