Treat SyncCredentialsLost as an auth error

chrome/browser/ui/webui/sync_setup_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/sync_setup_handler.h"
 
 #include "base/bind.h"
 #include "base/basictypes.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 854 matching lines @@
       CloseOverlay();
     return;
   }
 
   // Notify services that we are now active.
   GetLoginUIService()->SetLoginUI(this);
   service->set_setup_in_progress(true);
 
   // There are several different UI flows that can bring the user here:
   // 1) Signin promo (passes force_login=true)
-  // 2) Normal signin through options page (AreCredentialsAvailable() will
+  // 2) Normal signin through options page (IsSyncEnabledAndLoggedIn() will
   //    return false).
   // 3) Previously working credentials have expired
   //    (service->GetAuthError() != NONE).
   // 4) User is already signed in, but App Notifications needs to force another
   //    login so it can fetch an oauth token (passes force_login=true)
   // 5) User clicks [Advanced Settings] button on options page while already
   //    logged in.
   // 6) One-click signin (credentials are already available, so should display
   //    sync configure UI, not login UI).
   // 7) ChromeOS re-enable after disabling sync.
 #if !defined(OS_CHROMEOS)
   if (force_login ||
-      !service->AreCredentialsAvailable() ||
+      !service->IsSyncEnabledAndLoggedIn() ||
       service->GetAuthError().state() != GoogleServiceAuthError::NONE) {
     // User is not logged in, or login has been specially requested - need to
     // display login UI (cases 1-4).
     DisplayGaiaLogin(false);
   } else {
     // User is already logged in. They must have brought up the config wizard
     // via the "Advanced..." button or through One-Click signin (cases 5/6).
     DisplayConfigureSync(true, false);
   }
 #else
@@ skipping 68 matching lines @@
     if (i != current_profile_index && AreUserNamesEqual(
         cache.GetUserNameOfProfileAtIndex(i), username_utf16)) {
       *error_message = l10n_util::GetStringUTF16(
           IDS_SYNC_USER_NAME_IN_USE_ERROR);
       return false;
     }
   }
 
   return true;
 }