Make Blacklist::IsBlacklist asynchronous (it will need to be for safe

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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 89 matching lines @@
         'browser/chromeos/settings/mock_owner_key_util.h',
         'browser/chromeos/system/mock_statistics_provider.cc',
         'browser/chromeos/system/mock_statistics_provider.h',
         # The only thing used from browser is Browser::Type.
         'browser/download/download_test_file_chooser_observer.cc',
         'browser/download/download_test_file_chooser_observer.h',
         'browser/download/test_download_shelf.cc',
         'browser/download/test_download_shelf.h',
         'browser/extensions/mock_extension_special_storage_policy.cc',
         'browser/extensions/mock_extension_special_storage_policy.h',
+        'browser/extensions/test_blacklist.cc',
+        'browser/extensions/test_blacklist.h',
         'browser/extensions/test_extension_prefs.cc',
         'browser/extensions/test_extension_prefs.h',
         'browser/extensions/test_extension_service.cc',
         'browser/extensions/test_extension_service.h',
         'browser/extensions/test_extension_system.cc',
         'browser/extensions/test_extension_system.h',
         'browser/extensions/test_management_policy.cc',
         'browser/extensions/test_management_policy.h',
         'browser/google_apis/test_server/http_connection.cc',
         'browser/google_apis/test_server/http_connection.h',
@@ skipping 562 matching lines @@
         'browser/extensions/api/web_request/upload_data_presenter_unittest.cc',
         'browser/extensions/api/web_request/web_request_api_unittest.cc',
         'browser/extensions/api/web_request/web_request_permissions_unittest.cc',
         'browser/extensions/api/web_request/web_request_time_tracker_unittest.cc',
         'browser/extensions/app_notification_manager_sync_unittest.cc',
         'browser/extensions/app_notification_manager_unittest.cc',
         'browser/extensions/app_notification_storage_unittest.cc',
         'browser/extensions/app_notification_test_util.cc',
         'browser/extensions/app_notify_channel_setup_unittest.cc',
         'browser/extensions/app_sync_data_unittest.cc',
+        'browser/extensions/blacklist_unittest.cc',
         'browser/extensions/component_loader_unittest.cc',
         'browser/extensions/convert_user_script_unittest.cc',
         'browser/extensions/convert_web_app_unittest.cc',
         'browser/extensions/default_apps_unittest.cc',
         'browser/extensions/event_listener_map_unittest.cc',
         'browser/extensions/event_router_forwarder_unittest.cc',
         'browser/extensions/extension_action_icon_factory_unittest.cc',
         'browser/extensions/extension_action_unittest.cc',
         'browser/extensions/extension_context_menu_model_unittest.cc',
         'browser/extensions/extension_creator_filter_unittest.cc',
@@ skipping 1600 matching lines @@
             'unit_tests.isolate',
           ],
           'sources': [
             'unit_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }