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

ash/system/chromeos/system_clock_observer.h

Index: ash/system/chromeos/system_clock_observer.h
diff --git a/ash/system/chromeos/system_clock_observer.h b/ash/system/chromeos/system_clock_observer.h
index dcc11eeca8239b3f550f4144f6c7e9d505be70df..5d4c4d668008a3d1ba3ba70cfa3ccc838121d992 100644
--- a/ash/system/chromeos/system_clock_observer.h
+++ b/ash/system/chromeos/system_clock_observer.h
@@ -19,11 +19,16 @@ class SystemClockObserver
 
   // chromeos::SystemClockClient::Observer
   virtual void SystemClockUpdated() OVERRIDE;
+  virtual void SystemClockCanSetTimeChanged(bool can_set_time) OVERRIDE;
 
   // chromeos::system::TimezoneSettings::Observer
   virtual void TimezoneChanged(const icu::TimeZone& timezone) OVERRIDE;
 
+  bool can_set_time() { return can_set_time_; }
+
  private:
+  bool can_set_time_;
+
   DISALLOW_COPY_AND_ASSIGN(SystemClockObserver);
 };