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

chrome/browser/chromeos/cros/cros_network_functions.cc

 // 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.
 
 #include "chrome/browser/chromeos/cros/cros_network_functions.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
@@ skipping 662 matching lines @@
     return false;
   }
   return true;
 }
 
 bool CrosRemoveIPConfig(const std::string& ipconfig_path) {
   return DBusThreadManager::Get()->GetFlimflamIPConfigClient()->
       CallRemoveAndBlock(dbus::ObjectPath(ipconfig_path));
 }
 
+void CrosRequestIPConfigRefresh(const std::string& ipconfig_path) {
+  DBusThreadManager::Get()->GetFlimflamIPConfigClient()->Refresh(
+      dbus::ObjectPath(ipconfig_path),
+      base::Bind(&DoNothing));
+}
+
 bool CrosGetWifiAccessPoints(WifiAccessPointVector* result) {
   scoped_ptr<base::DictionaryValue> manager_properties(
       DBusThreadManager::Get()->GetFlimflamManagerClient()->
       CallGetPropertiesAndBlock());
   if (!manager_properties.get()) {
     LOG(WARNING) << "Couldn't read managers's properties";
     return false;
   }
 
   base::ListValue* devices = NULL;
@@ skipping 72 matching lines @@
     return false;  // No powered device found that has a 'Networks' array.
   return true;
 }
 
 void CrosConfigureService(const base::DictionaryValue& properties) {
   DBusThreadManager::Get()->GetFlimflamManagerClient()->ConfigureService(
       properties, base::Bind(&DoNothing));
 }
 
 }  // namespace chromeos