cros: Flush profile files at critical moments

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.
 {
   'variables': {
     'chrome_unit_tests_sources': [
       # histograms.xml is analyzed by AboutFlagsHistogramTest, so this
       # dependency is needed to make commit bots run unit_tests on
       # histograms.xml changes.
       '../tools/metrics/histograms/histograms.xml',
@@ skipping 938 matching lines @@
       '../components/drive/sync_client_unittest.cc',
       '../ui/base/ime/chromeos/input_method_whitelist.cc',
       '../ui/base/ime/chromeos/input_method_whitelist.h',
       'browser/chromeos/accessibility/magnification_manager_unittest.cc',
       'browser/chromeos/accessibility/spoken_feedback_event_rewriter_unittest.cc',
       'browser/chromeos/attestation/attestation_ca_client_unittest.cc',
       'browser/chromeos/attestation/attestation_policy_observer_unittest.cc',
       'browser/chromeos/attestation/fake_certificate.cc',
       'browser/chromeos/attestation/fake_certificate.h',
       'browser/chromeos/attestation/platform_verification_flow_unittest.cc',
+      'browser/chromeos/base/file_flusher_unittest.cc',
       'browser/chromeos/certificate_provider/certificate_provider_service_unittest.cc',
       'browser/chromeos/customization/customization_document_unittest.cc',
       'browser/chromeos/display/display_preferences_unittest.cc',
       'browser/chromeos/drive/download_handler_unittest.cc',
       'browser/chromeos/drive/drive_file_stream_reader_unittest.cc',
       'browser/chromeos/drive/drive_integration_service_unittest.cc',
       'browser/chromeos/drive/file_system_util_unittest.cc',
       'browser/chromeos/drive/file_task_executor_unittest.cc',
       'browser/chromeos/drive/fileapi/fileapi_worker_unittest.cc',
       'browser/chromeos/drive/fileapi/webkit_file_stream_reader_impl_unittest.cc',
@@ skipping 2069 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }