Implements unittests for hats notification controller

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 1014 matching lines @@
       'browser/chromeos/file_system_provider/queue_unittest.cc',
       'browser/chromeos/file_system_provider/registry_unittest.cc',
       'browser/chromeos/file_system_provider/request_manager_unittest.cc',
       'browser/chromeos/file_system_provider/scoped_file_opener_unittest.cc',
       'browser/chromeos/file_system_provider/service_unittest.cc',
       'browser/chromeos/file_system_provider/throttled_file_system_unittest.cc',
       'browser/chromeos/fileapi/external_file_url_request_job_unittest.cc',
       'browser/chromeos/fileapi/external_file_url_util_unittest.cc',
       'browser/chromeos/fileapi/file_access_permissions_unittest.cc',
       'browser/chromeos/fileapi/file_system_backend_unittest.cc',
+      'browser/chromeos/hats/hats_notification_controller_unittest.cc',
       'browser/chromeos/input_method/browser_state_monitor_unittest.cc',
       'browser/chromeos/input_method/input_method_configuration_unittest.cc',
       'browser/chromeos/input_method/input_method_engine_unittest.cc',
       'browser/chromeos/input_method/input_method_manager_impl_unittest.cc',
       'browser/chromeos/input_method/input_method_persistence_unittest.cc',
       'browser/chromeos/input_method/input_method_util_unittest.cc',
       'browser/chromeos/locale_change_guard_unittest.cc',
       'browser/chromeos/login/auth/cryptohome_authenticator_unittest.cc',
       'browser/chromeos/login/easy_unlock/easy_unlock_challenge_wrapper_unittest.cc',
       'browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_unittest.cc',
@@ skipping 1981 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }