Add support for Device.ProposeScan to NetworkDeviceHandler.

chromeos/network/network_device_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_DEVICE_HANDLER_H_
 #define CHROMEOS_NETWORK_NETWORK_DEVICE_HANDLER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 43 matching lines @@
       const network_handler::ErrorCallback& error_callback) const;
 
   // Requests a refresh of the IP configuration for the device specified by
   // |device_path| if it exists. This will apply any newly configured
   // properties and renew the DHCP lease.
   void RequestRefreshIPConfigs(
       const std::string& device_path,
       const base::Closure& callback,
       const network_handler::ErrorCallback& error_callback);
 
+  // Requests a network scan on the device specified by |device_path|.
+  // For cellular networks, the result of this call gets asynchronously stored
+  // in the corresponding DeviceState object through a property update. For all
+  // other technologies a service gets created for each found network, which
+  // can be accessed through the corresponding NetworkState object.
+  //
+  // TODO(armansito): Device.ProposeScan is deprecated and the preferred method
+  // of requesting a network scan is Manager.RequestScan, however shill
+  // currently doesn't support cellular network scans via Manager.RequestScan.
+  // Remove this method once shill supports it (crbug.com/262356).
+  void ProposeScan(
+      const std::string& device_path,
+      const base::Closure& callback,
+      const network_handler::ErrorCallback& error_callback);
+
   // Tells the device to set the modem carrier firmware, as specified by
   // |carrier|.
   //
   // See note on |callback| and |error_callback| in the class description
   // above. The operation will fail if:
   //    - Device |device_path| could not be found.
   //    - |carrier| doesn't match one of the supported carriers, as reported by
   //    - Shill.
   //    - Operation is not supported by the device.
   void SetCarrier(
@@ skipping 89 matching lines @@
       const network_handler::ErrorCallback& error_callback,
       const std::string& error_name,
       const std::string& error_message);
 
   DISALLOW_COPY_AND_ASSIGN(NetworkDeviceHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_NETWORK_NETWORK_DEVICE_HANDLER_H_