Sync FileSystem: Mark empty batch sync origin as incremental sync origin.

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 2113 matching lines @@
             'test/base/browser_with_test_window_test.cc',
             'test/base/browser_with_test_window_test.h',
             'test/base/test_browser_window.h',
 
             'browser/sessions/persistent_tab_restore_service_browsertest.cc',
             'browser/sessions/session_backend_unittest.cc',
 
             # Test files cannot be opened on Android.
             'browser/google_apis/gdata_wapi_operations_unittest.cc',
             'browser/google_apis/gdata_wapi_parser_unittest.cc',
+            'browser/sync_file_system/drive_file_sync_service_unittest.cc',
 
             # The autofill popup is implemented in mostly native code on
             # Android.
             'browser/ui/autofill/autofill_popup_controller_unittest.cc',
           ],
           'sources/': [
             ['exclude', '^browser/captive_portal/'],
             ['exclude', '^browser/chrome_to_mobile'],
             ['exclude', '^browser/first_run/'],
             ['exclude', '^browser/importer/'],
@@ skipping 170 matching lines @@
             'unit_tests.isolate',
           ],
           'sources': [
             'unit_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }