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

chrome/test/chromedriver/BUILD.gn

 # Copyright 2015 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.
 
 import("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
 import("//testing/test.gni")
 
 # GYP version: chrome/chrome_tests.gypi:automation_client_lib
 #              (embed_js_in_cpp action)
@@ skipping 221 matching lines @@
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps = [
     ":lib",
     "//base",
     "//base/test:run_all_unittests",
     "//net",
     "//net:http_server",
     "//net:test_support",
     "//testing/gtest",
+    "//ui/events:test_support",
     "//url",
   ]
 }