Updates file type selector for fileSystem API

chrome/chrome_tests.gypi

 # Copyright (c) 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' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 1208 matching lines @@
         'browser/extensions/api/cookies/cookies_unittest.cc',
         'browser/extensions/api/declarative/initializing_rules_registry_unittest.cc',
         'browser/extensions/api/declarative/rules_registry_service_unittest.cc',
         'browser/extensions/api/declarative/rules_registry_with_cache_unittest.cc',
         'browser/extensions/api/declarative_webrequest/webrequest_action_unittest.cc',
         'browser/extensions/api/declarative_webrequest/webrequest_condition_attribute_unittest.cc',
         'browser/extensions/api/declarative_webrequest/webrequest_condition_unittest.cc',
         'browser/extensions/api/declarative_webrequest/webrequest_rules_registry_unittest.cc',
         'browser/extensions/api/discovery/discovery_api_unittest.cc',
         'browser/extensions/api/extension_action/extension_browser_actions_api_unittest.cc',
+        'browser/extensions/api/file_system/file_system_api_unittest.cc',
         'browser/extensions/api/identity/web_auth_flow_unittest.cc',
         'browser/extensions/api/idle/idle_api_unittest.cc',
         'browser/extensions/api/omnibox/omnibox_unittest.cc',
         'browser/extensions/api/permissions/permissions_api_helpers_unittest.cc',
         'browser/extensions/api/proxy/proxy_api_helpers_unittest.cc',
         'browser/extensions/api/serial/serial_port_enumerator_unittest.cc',
         'browser/extensions/api/socket/socket_api_unittest.cc',
         'browser/extensions/api/socket/tcp_socket_unittest.cc',
         'browser/extensions/api/web_navigation/frame_navigation_state_unittest.cc',
         'browser/extensions/api/web_request/web_request_api_unittest.cc',
@@ skipping 3428 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'browser_tests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }