Fix NetworkSmsHandler to observe Manager and improve API

chromeos/network/network_handler.h

 // Copyright 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.
 
 #ifndef CHROMEOS_NETWORK_NETWORK_HANDLER_H_
 #define CHROMEOS_NETWORK_NETWORK_HANDLER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "chromeos/chromeos_export.h"
 
 namespace chromeos {
 
 class GeolocationHandler;
 class ManagedNetworkConfigurationHandler;
 class NetworkConfigurationHandler;
 class NetworkConnectionHandler;
 class NetworkDeviceHandler;
 class NetworkProfileHandler;
 class NetworkStateHandler;
+class NetworkSmsHandler;
 
 // Class for handling initialization and access to chromeos network handlers.
 // This class should NOT be used in unit tests. Instead, construct individual
 // classes independently.
 class CHROMEOS_EXPORT NetworkHandler {
  public:
   // Sets the global instance. Must be called before any calls to Get().
   static void Initialize();
 
   // Destroys the global instance.
   static void Shutdown();
 
   // Gets the global instance. Initialize() must be called first.
   static NetworkHandler* Get();
 
   // Returns true if the global instance has been initialized.
   static bool IsInitialized();
 
   // Do not use these accessors within this module; all dependencies should be
   // explicit so that classes can be constructed explicitly in tests without
   // NetworkHandler.
   NetworkStateHandler* network_state_handler();
   NetworkDeviceHandler* network_device_handler();
   NetworkProfileHandler* network_profile_handler();
   NetworkConfigurationHandler* network_configuration_handler();
   ManagedNetworkConfigurationHandler* managed_network_configuration_handler();
   NetworkConnectionHandler* network_connection_handler();
+  NetworkSmsHandler* network_sms_handler();
   GeolocationHandler* geolocation_handler();
 
  private:
   NetworkHandler();
   virtual ~NetworkHandler();
 
   void Init();
 
   // The order of these determines the (inverse) destruction order.
   scoped_ptr<NetworkStateHandler> network_state_handler_;
   scoped_ptr<NetworkDeviceHandler> network_device_handler_;
   scoped_ptr<NetworkProfileHandler> network_profile_handler_;
   scoped_ptr<NetworkConfigurationHandler> network_configuration_handler_;
   scoped_ptr<ManagedNetworkConfigurationHandler>
       managed_network_configuration_handler_;
   scoped_ptr<NetworkConnectionHandler> network_connection_handler_;
+  scoped_ptr<NetworkSmsHandler> network_sms_handler_;
   scoped_ptr<GeolocationHandler> geolocation_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_NETWORK_NETWORK_HANDLER_H_