Implement Windows GPO support for "dlpref" in component updater.

components/components_tests.gyp

 # Copyright 2014 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': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
@@ skipping 764 matching lines @@
     ],
     'update_client_unittest_sources': [
       'update_client/component_patcher_unittest.cc',
       'update_client/crx_downloader_unittest.cc',
       'update_client/ping_manager_unittest.cc',
       'update_client/request_sender_unittest.cc',
       'update_client/update_checker_unittest.cc',
       'update_client/update_client_unittest.cc',
       'update_client/update_query_params_unittest.cc',
       'update_client/update_response_unittest.cc',
+      'update_client/utils_unittest.cc',
     ],
     'upload_list_unittest_sources': [
       'upload_list/upload_list_unittest.cc',
     ],
     'url_formatter_unittest_sources': [
       'url_formatter/elide_url_unittest.cc',
       'url_formatter/url_fixer_unittest.cc',
       'url_formatter/url_formatter_unittest.cc',
     ],
     'url_matcher_unittest_sources': [
@@ skipping 1090 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }