Modernize on-demand update checks on Windows.

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': [
       '../apps/saved_files_service_unittest.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.h',
       '../components/autofill/content/renderer/test_password_generation_agent.cc',
@@ skipping 432 matching lines @@
       'browser/external_protocol/external_protocol_handler_unittest.cc',
       'browser/favicon/favicon_handler_unittest.cc',
       'browser/file_select_helper_unittest.cc',
       'browser/first_run/first_run_unittest.cc',
       'browser/font_family_cache_unittest.cc',
       'browser/geolocation/geolocation_permission_context_unittest.cc',
       'browser/global_keyboard_shortcuts_mac_unittest.mm',
       'browser/google/google_search_counter_android_unittest.cc',
       'browser/google/google_search_counter_unittest.cc',
       'browser/google/google_update_settings_unittest.cc',
+      'browser/google/google_update_win_unittest.cc',
       'browser/history/android/android_cache_database_unittest.cc',
       'browser/history/android/android_history_provider_service_unittest.cc',
       'browser/history/android/android_provider_backend_unittest.cc',
       'browser/history/android/android_urls_database_unittest.cc',
       'browser/history/android/bookmark_model_sql_handler_unittest.cc',
       'browser/history/android/sqlite_cursor_unittest.cc',
       'browser/history/android/urls_sql_handler_unittest.cc',
       'browser/history/android/visit_sql_handler_unittest.cc',
       'browser/history/expire_history_backend_unittest.cc',
       'browser/history/history_backend_unittest.cc',
@@ skipping 2478 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }