[Sync] Handle errors during first sync gracefully.

chrome/browser/sync/glue/sync_backend_host_mock.h

 // 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.
 
 #ifndef CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_MOCK_H__
 #define CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_MOCK_H__
 #pragma once
 
 #include <set>
 
 #include "base/callback_forward.h"
 #include "chrome/browser/sync/glue/sync_backend_host.h"
 #include "chrome/browser/sync/profile_sync_test_util.h"
 #include "content/public/browser/notification_types.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace browser_sync {
 
 class SyncBackendHostMock : public SyncBackendHost {
  public:
   SyncBackendHostMock();
   virtual ~SyncBackendHostMock();
 
-  MOCK_METHOD5(ConfigureDataTypes,
+  MOCK_METHOD6(ConfigureDataTypes,
                void(syncable::ModelTypeSet,
                     syncable::ModelTypeSet,
                     sync_api::ConfigureReason,
                     base::Callback<void(syncable::ModelTypeSet)>,
+                    base::Callback<void()>,
                     bool));
   MOCK_METHOD0(StartSyncingWithServer, void());
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_MOCK_H__