Disable non Latin keyboard layout on Lock screen and Sign-in screen.

chrome/test/data/extensions/api_test/input_method/background.js

 // Copyright (c) 2011 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.
 
-var kNewInputMethod = "ru::rus";
+var kNewInputMethod = "fr::fra";
 
 function setAndGetTest() {
   console.log('Changing input method to: ' + kNewInputMethod);
   chrome.test.sendMessage('setInputMethod:' + kNewInputMethod,
     function (response) {
       chrome.test.assertEq('done', response);
       console.log('Getting current input method.');
       chrome.inputMethodPrivate.get(function (inputMethod) {
         chrome.test.assertEq(inputMethod, kNewInputMethod);
         chrome.test.succeed();
@@ skipping 12 matching lines @@
   );
   console.log('Changing input method to: ' + kNewInputMethod);
   chrome.test.sendMessage('setInputMethod:' + kNewInputMethod,
     function (response) {
       chrome.test.assertEq('done', response);
     }
   );
 }
 
 chrome.test.runTests([setAndGetTest, setAndObserveTest]);