This adds Cros API for calling the "Refresh" function on shill's

chrome/browser/chromeos/cros/network_library.h

 // Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_
 #define CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 1540 matching lines @@
   virtual bool HasProfileType(NetworkProfileType type) const = 0;
 
   // Move the network to the shared/global profile.
   virtual void SetNetworkProfile(const std::string& service_path,
                                  NetworkProfileType type) = 0;
 
   // Returns false if there is no way to connect to this network, even with
   // user input (e.g. it requires a user profile but none is available).
   virtual bool CanConnectToNetwork(const Network* network) const = 0;
 
+  // Refresh the IP configuration of the given network after changes.  Puts
+  // newly configured properties into effect and renews DHCP lease.
+  virtual void RefreshIPConfig(Network* network) = 0;
+
   // Connect to the specified wireless network.
   virtual void ConnectToWifiNetwork(WifiNetwork* network) = 0;
 
   // Connect to the specified wireless network and set its profile
   // to SHARED if |shared| is true, otherwise to USER.
   virtual void ConnectToWifiNetwork(WifiNetwork* network, bool shared) = 0;
 
   // Connect to the specified cellular network.
   virtual void ConnectToCellularNetwork(CellularNetwork* network) = 0;
 
@@ skipping 111 matching lines @@
                                 const std::string& service_path) = 0;
 
   // Factory function, creates a new instance and returns ownership.
   // For normal usage, access the singleton via CrosLibrary::Get().
   static NetworkLibrary* GetImpl(bool stub);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_