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

chrome/browser/chromeos/input_method/mock_input_method_manager.cc

 // Copyright (c) 2012 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 "chrome/browser/chromeos/input_method/mock_input_method_manager.h"
 
 namespace chromeos {
 namespace input_method {
 
 MockInputMethodManager::MockInputMethodManager()
@@ skipping 117 matching lines @@
 }
 
 InputMethodDescriptor MockInputMethodManager::GetCurrentInputMethod() const {
   InputMethodDescriptor descriptor =
       InputMethodUtil::GetFallbackInputMethodDescriptor();
   if (!current_input_method_id_.empty()) {
     return InputMethodDescriptor(current_input_method_id_,
                                  descriptor.name(),
                                  descriptor.keyboard_layouts(),
                                  descriptor.language_codes(),
+                                 true,
                                  GURL());  // options page url.
   }
   return descriptor;
 }
 
 InputMethodPropertyList
 MockInputMethodManager::GetCurrentInputMethodProperties() const {
   return InputMethodPropertyList();
 }
 
@@ skipping 12 matching lines @@
 
 void MockInputMethodManager::set_application_locale(const std::string& value) {
   delegate_.set_active_locale(value);
 }
 
 void MockInputMethodManager::set_hardware_keyboard_layout(
     const std::string& value) {
   delegate_.set_hardware_keyboard_layout(value);
 }
 
-bool MockInputMethodManager::IsFullLatinKeyboard(
+bool MockInputMethodManager::IsLoginKeyboard(
     const std::string& layout) const {
   return true;
 }
 }  // namespace input_method
 }  // namespace chromeos