Force U.S. English keyboard layout for TextfieldTest.KeysWithModifiersTest

chrome/chrome_tests.gypi

 # Copyright 2013 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': {
     'build_angle_deqp_tests%': 0,
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
@@ skipping 1465 matching lines @@
     ],
     'chrome_driver_tests_sources': [
       'test/chromedriver/key_converter_unittest.cc',
       'test/chromedriver/keycode_text_conversion_unittest.cc',
       'test/chromedriver/net/net_util_unittest.cc',
       'test/chromedriver/net/port_server_unittest.cc',
       'test/chromedriver/net/sync_websocket_impl_unittest.cc',
       'test/chromedriver/net/test_http_server.cc',
       'test/chromedriver/net/test_http_server.h',
       'test/chromedriver/net/websocket_unittest.cc',
-      'test/chromedriver/test_util.cc',
-      'test/chromedriver/test_util.h',
     ],
     'sync_integration_tests_sources': [
       'app/chrome_dll.rc',
       'app/chrome_dll_resource.h',
       'app/chrome_version.rc.version',
       'browser/sync/test/integration/enable_disable_test.cc',
       'browser/sync/test/integration/migration_test.cc',
       'browser/sync/test/integration/single_client_app_list_sync_test.cc',
       'browser/sync/test/integration/single_client_apps_sync_test.cc',
       'browser/sync/test/integration/single_client_arc_package_sync_test.cc',
@@ skipping 2111 matching lines @@
             'browser',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
           ],
         }]
     }],
   ],  # 'conditions'
 }