Add login screen locale and input method device policies

chrome/browser/lifetime/application_lifetime.cc

Index: chrome/browser/lifetime/application_lifetime.cc
diff --git a/chrome/browser/lifetime/application_lifetime.cc b/chrome/browser/lifetime/application_lifetime.cc
index e603602cc707f09aafa2bb81e3dda5fee1ef99f8..db99c85a681231fa15bd2ea3ba1e0df8c30ffcb6 100644
--- a/chrome/browser/lifetime/application_lifetime.cc
+++ b/chrome/browser/lifetime/application_lifetime.cc
@@ -46,10 +46,13 @@
 #if defined(OS_CHROMEOS)
 #include "base/sys_info.h"
 #include "chrome/browser/chromeos/boot_times_recorder.h"
+#include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_policy_controller.h"
 #include "chromeos/dbus/session_manager_client.h"
 #include "chromeos/dbus/update_engine_client.h"
+#include "chromeos/settings/cros_settings_names.h"
+#include "ui/base/l10n/l10n_util.h"
 #endif
 
 #if defined(OS_WIN)
@@ -168,12 +171,30 @@ void AttemptUserExit() {
   if (state) {
     chromeos::BootTimesRecorder::Get()->OnLogoutStarted(state);
 
+    bool commit_pending_write = false;
+
     // Login screen should show up in owner's locale.
     std::string owner_locale = state->GetString(prefs::kOwnerLocale);
     if (!owner_locale.empty() &&
         state->GetString(prefs::kApplicationLocale) != owner_locale &&
         !state->IsManagedPreference(prefs::kApplicationLocale)) {
       state->SetString(prefs::kApplicationLocale, owner_locale);
+      commit_pending_write = true;
+    }
+
+    // If a policy mandates the login screen locale, use it.
+    chromeos::CrosSettings* cros_settings = chromeos::CrosSettings::Get();
+    const base::ListValue* login_screen_locales = nullptr;
+    std::string login_screen_locale;
+    if (cros_settings->GetList(chromeos::kDeviceLoginScreenLocales,
+                               &login_screen_locales) &&
+        !login_screen_locales->empty() &&
+        login_screen_locales->GetString(0, &login_screen_locale)) {
+      state->SetString(prefs::kApplicationLocale, login_screen_locale);
+      commit_pending_write = true;
+    }
+
+    if (commit_pending_write) {
       TRACE_EVENT0("shutdown", "CommitPendingWrite");
       state->CommitPendingWrite();
     }