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

chromeos/ime/input_method_whitelist.cc

 // 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.
 
 #include "chromeos/ime/input_method_whitelist.h"
 
 #include <vector>
 
 #include "base/strings/string_util.h"
 #include "chromeos/ime/input_method_descriptor.h"
@@ skipping 28 matching lines @@
 
     std::vector<std::string> languages;
     Tokenize(kInputMethods[i].language_code, kLanguageDelimiter, &languages);
     DCHECK(!languages.empty());
 
     input_methods->push_back(InputMethodDescriptor(
         kInputMethods[i].input_method_id,
         "",
         layouts,
         languages,
+        kInputMethods[i].is_login_keyboard,
         GURL()));  // options page url, not available for non-extension input
                    // method.
   }
   return input_methods.Pass();
 }
 
 }  // namespace input_method
 }  // namespace chromeos