[iOS] Upstream SyncSetupService (and mock)

ios/chrome/ios_chrome_tests.gyp

 # Copyright 2014 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.
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'ios_chrome_unittests',
@@ skipping 44 matching lines @@
         '../../testing/gtest.gyp:gtest',
         '../provider/ios_provider_chrome.gyp:ios_provider_chrome_browser',
         'ios_chrome.gyp:ios_chrome_browser',
       ],
       'sources': [
         'browser/geolocation/location_manager+Testing.h',
         'browser/geolocation/test_location_manager.h',
         'browser/geolocation/test_location_manager.mm',
         'browser/net/mock_image_fetcher.h',
         'browser/net/mock_image_fetcher.mm',
+        'browser/sync/sync_setup_service_mock.cc',
+        'browser/sync/sync_setup_service_mock.h',
         'test/ios_chrome_unit_test_suite.cc',
         'test/ios_chrome_unit_test_suite.h',
         'test/run_all_unittests.cc',
         'test/testing_application_context.cc',
         'test/testing_application_context.h',
       ],
     },
   ],
 }