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

chrome/browser/chromeos/input_method/input_method_persistence.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/input_method_persistence.h"
 
 #include "base/chromeos/chromeos_version.h"
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 15 matching lines @@
   g_browser_process->local_state()->SetString(
         language_prefs::kPreferredKeyboardLayout, input_method);
 }
 
 // Update user LRU keyboard layout for login screen
 static void SetUserLRUInputMethod(
     const std::string& input_method,
     const chromeos::input_method::InputMethodManager* const manager) {
   // Skip if it's not a keyboard layout. Drop input methods including
   // extension ones.
-  if (!InputMethodUtil::IsKeyboardLayout(input_method))
+  if (!manager->IsLoginKeyboard(input_method))
     return;
 
   PrefService* const local_state = g_browser_process->local_state();
 
   Profile* const profile = ProfileManager::GetDefaultProfile();
 
   if (profile == NULL)
     return;
 
-  if (!manager->IsFullLatinKeyboard(input_method))
+  if (!manager->IsLoginKeyboard(input_method))
     return;
 
   const std::string username = profile->GetProfileName();
   if (base::chromeos::IsRunningOnChromeOS() && !username.empty() &&
       !local_state->ReadOnly()) {
     bool update_succeed = false;
     {
       // Updater may have side-effects, therefore we do not replace
       // entry while updater exists.
       DictionaryPrefUpdate updater(local_state, prefs::kUsersLRUInputMethod);
@@ skipping 60 matching lines @@
 }
 
 void InputMethodPersistence::InputMethodChanged(
     InputMethodManager* manager, bool show_message) {
   DCHECK_EQ(input_method_manager_, manager);
   const std::string current_input_method =
       manager->GetCurrentInputMethod().id();
   // Save the new input method id depending on the current browser state.
   switch (state_) {
     case InputMethodManager::STATE_LOGIN_SCREEN:
-      if (!InputMethodUtil::IsKeyboardLayout(current_input_method)) {
+      if (!manager->IsLoginKeyboard(current_input_method)) {
         DVLOG(1) << "Only keyboard layouts are supported: "
                  << current_input_method;
         return;
       }
       PersistSystemInputMethod(current_input_method);
       return;
     case InputMethodManager::STATE_BROWSER_SCREEN:
       PersistUserInputMethod(current_input_method, manager);
       return;
     case InputMethodManager::STATE_LOCK_SCREEN:
       // We use a special set of input methods on the screen. Do not update.
       return;
     case InputMethodManager::STATE_TERMINATING:
       return;
   }
   NOTREACHED();
 }
 
 void InputMethodPersistence::InputMethodPropertyChanged(
     InputMethodManager* manager) {}
 
 void InputMethodPersistence::OnSessionStateChange(
     InputMethodManager::State new_state) {
   state_ = new_state;
 }
 
 }  // namespace input_method
 }  // namespace chromeos