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

chromeos/dbus/flimflam_ipconfig_client.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 CHROMEOS_DBUS_FLIMFLAM_IPCONFIG_CLIENT_H_
 #define CHROMEOS_DBUS_FLIMFLAM_IPCONFIG_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 34 matching lines @@
 
   // Sets PropertyChanged signal handler.
   virtual void SetPropertyChangedHandler(
       const dbus::ObjectPath& ipconfig_path,
       const PropertyChangedHandler& handler) = 0;
 
   // Resets PropertyChanged signal handler.
   virtual void ResetPropertyChangedHandler(
       const dbus::ObjectPath& ipconfig_path) = 0;
 
+  // Refreshes the active IP configuration after service property changes and
+  // renews the DHCP lease, if any.
+  virtual void Refresh(const dbus::ObjectPath& ipconfig_path,
+                       const VoidDBusMethodCallback& callback) = 0;
+
   // Calls GetProperties method.
   // |callback| is called after the method call succeeds.
   virtual void GetProperties(const dbus::ObjectPath& ipconfig_path,
                              const DictionaryValueCallback& callback) = 0;
 
   // DEPRECATED DO NOT USE: Calls GetProperties method and blocks until the
   // method call finishes.  The caller is responsible to delete the result.
   // Thie method returns NULL when method call fails.
   //
   // TODO(hashimoto): Refactor CrosListIPConfigs to remove this method.
@@ skipping 30 matching lines @@
   // Create() should be used instead.
   FlimflamIPConfigClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlimflamIPConfigClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_FLIMFLAM_IPCONFIG_CLIENT_H_