Add a preference to control Windows desktop search redirection.

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 450 matching lines @@
       'browser/ui/passwords/password_manager_presenter_unittest.cc',
       'browser/ui/search_engines/keyword_editor_controller_unittest.cc',
       'browser/ui/sync/profile_signin_confirmation_helper_unittest.cc',
       'browser/ui/sync/sync_promo_ui_unittest.cc',
       'browser/ui/tests/ui_gfx_image_unittest.cc',
       'browser/ui/tests/ui_gfx_image_unittest.mm',
       'browser/ui/website_settings/website_settings_unittest.cc',
       'browser/ui/webui/browsing_history_handler_unittest.cc',
       'browser/ui/webui/fileicon_source_unittest.cc',
       'browser/ui/webui/log_web_ui_url_unittest.cc',
+      'browser/ui/startup/startup_browser_creator_win_unittest.cc',
       'browser/update_client/chrome_update_query_params_delegate_unittest.cc',
       'common/chrome_content_client_unittest.cc',
       'common/chrome_paths_unittest.cc',
       'common/cloud_print/cloud_print_helpers_unittest.cc',
       'common/component_flash_hint_file_linux_unittest.cc',
       'common/crash_keys_unittest.cc',
       'common/ini_parser_unittest.cc',
       'common/instant_types_unittest.cc',
       'common/mac/cfbundle_blocker_unittest.mm',
       'common/mac/mock_launchd.cc',
@@ skipping 2524 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }