Guest Mode: input method should default to the underlying latin keyboard layout.

chrome/browser/chromeos/login/user_manager_impl.cc

 // Copyright (c) 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 "chrome/browser/chromeos/login/user_manager_impl.h"
 
 #include <cstddef>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 780 matching lines @@
   DCHECK(!pref_locale.empty());
   LOG(WARNING) << "RespectLocalePreference: "
                << "app_locale='" << pref_app_locale << "', "
                << "bkup_locale='" << pref_bkup_locale << "', "
                << (account_locale != NULL
                        ? (std::string("account_locale='") + (*account_locale) +
                           "'. ")
                        : (std::string("account_locale - unused. ")))
                << " Selected '" << pref_locale << "'";
   profile->ChangeAppLocale(pref_locale, Profile::APP_LOCALE_CHANGED_VIA_LOGIN);
-  // Here we don't enable keyboard layouts. Input methods are set up when
-  // the user first logs in. Then the user may customize the input methods.
-  // Hence changing input methods here, just because the user's UI language
-  // is different from the login screen UI language, is not desirable. Note
-  // that input method preferences are synced, so users can use their
-  // farovite input methods as soon as the preferences are synced.
-  locale_util::SwitchLanguage(pref_locale, false, callback.Pass());
+
+  // Here we don't enable keyboard layouts for normal users. Input methods
+  // are set up when the user first logs in. Then the user may customize the
+  // input methods.  Hence changing input methods here, just because the user's
+  // UI language is different from the login screen UI language, is not
+  // desirable. Note that input method preferences are synced, so users can use
+  // their farovite input methods as soon as the preferences are synced.
+  //
+  // For Guest mode, user locale preferences will never get initialized.
+  // So input methods should be enabled somewhere.
+  const bool enable_layouts = UserManager::Get()->IsLoggedInAsGuest();
+  locale_util::SwitchLanguage(pref_locale,
+                              enable_layouts,
+                              false /* login_layouts_only */,
+                              callback.Pass());
 
   return true;
 }
 
 void UserManagerImpl::StopPolicyObserverForTesting() {
   policy_observer_.reset();
 }
 
 void UserManagerImpl::Observe(int type,
                               const content::NotificationSource& source,
@@ skipping 1055 matching lines @@
   if (User* user = FindUserAndModify(user_id))
     user->SetAccountLocale(resolved_locale);
 }
 
 void UserManagerImpl::UpdateNumberOfUsers() {
   base::debug::SetCrashKeyValue(crash_keys::kNumberOfUsers,
       base::StringPrintf("%" PRIuS, GetLoggedInUsers().size()));
 }
 
 }  // namespace chromeos