Add RequestUpdate to NetworkSmsHandler

chromeos/network/network_sms_handler.h

Index: chromeos/network/network_sms_handler.h
diff --git a/chromeos/network/network_sms_handler.h b/chromeos/network/network_sms_handler.h
index 9430e307504a3661c01fa5aa093f24c79c905838..518b7b11584818e6c8028978b742389cc97bba5b 100644
--- a/chromeos/network/network_sms_handler.h
+++ b/chromeos/network/network_sms_handler.h
@@ -38,6 +38,9 @@ class CHROMEOS_EXPORT NetworkSmsHandler {
   // notified with initial messages should be added before calling this.
   void Init();
 
+  // Requests an immediate check for new messages.
+  void RequestUpdate();
+
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);