Date and Time dialog for when the clock isn't synced.

ash/system/chromeos/system_clock_observer.cc

Index: ash/system/chromeos/system_clock_observer.cc
diff --git a/ash/system/chromeos/system_clock_observer.cc b/ash/system/chromeos/system_clock_observer.cc
index d154d5eda2e6101b9603473ac5c77193aae5f0b7..00c7751a8d52267ea959bb907a9e6cc0392bb68c 100644
--- a/ash/system/chromeos/system_clock_observer.cc
+++ b/ash/system/chromeos/system_clock_observer.cc
@@ -27,8 +27,18 @@ void SystemClockObserver::SystemClockUpdated() {
       ->NotifySystemClockTimeUpdated();
 }
 
+void SystemClockObserver::SystemClockCanSetTimeChanged(bool can_set_time) {
+  Shell::GetInstance()->system_tray_notifier()
+      ->NotifySystemClockCanSetTimeChanged(can_set_time);
+}
+
 void SystemClockObserver::TimezoneChanged(const icu::TimeZone& timezone) {
   Shell::GetInstance()->system_tray_notifier()->NotifyRefreshClock();
 }
 
+bool SystemClockObserver::SystemClockCanSetTime() {
+  return chromeos::DBusThreadManager::Get()
+      ->GetSystemClockClient()->CanSetTime();
+}
+
 }  // namespace ash