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

chrome/test/chromedriver/BUILD.gn

Index: chrome/test/chromedriver/BUILD.gn
diff --git a/chrome/test/chromedriver/BUILD.gn b/chrome/test/chromedriver/BUILD.gn
index b154f8cd88373833ad3299277d03367cdd3ac88c..78750334dde86479186ab3dcbf0159e10b348e6e 100644
--- a/chrome/test/chromedriver/BUILD.gn
+++ b/chrome/test/chromedriver/BUILD.gn
@@ -388,8 +388,6 @@ test("chromedriver_tests") {
     "net/test_http_server.cc",
     "net/test_http_server.h",
     "net/websocket_unittest.cc",
-    "test_util.cc",
-    "test_util.h",
   ]
 
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
@@ -403,6 +401,7 @@ test("chromedriver_tests") {
     "//net:http_server",
     "//net:test_support",
     "//testing/gtest",
+    "//ui/events:test_support",
     "//url",
   ]
 }