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

chrome/browser/chromeos/cros/network_library_impl_cros.h

Index: chrome/browser/chromeos/cros/network_library_impl_cros.h
diff --git a/chrome/browser/chromeos/cros/network_library_impl_cros.h b/chrome/browser/chromeos/cros/network_library_impl_cros.h
index 1061644895c68af83e6c04556873e78753cd82ca..692caa37c6c100ca96fa38a9ee11082c0c79bf22 100644
--- a/chrome/browser/chromeos/cros/network_library_impl_cros.h
+++ b/chrome/browser/chromeos/cros/network_library_impl_cros.h
@@ -60,6 +60,8 @@ class NetworkLibraryImplCros : public NetworkLibraryImplBase  {
   virtual void RequestNetworkScan() OVERRIDE;
   virtual bool GetWifiAccessPoints(WifiAccessPointVector* result) OVERRIDE;
 
+  virtual void RefreshIPConfig(Network* network) OVERRIDE;
+
   virtual void DisconnectFromNetwork(const Network* network) OVERRIDE;
   virtual void CallEnableNetworkDeviceType(
       ConnectionType device, bool enable) OVERRIDE;
@@ -74,7 +76,7 @@ class NetworkLibraryImplCros : public NetworkLibraryImplBase  {
   virtual void SetIPConfig(const NetworkIPConfig& ipconfig) OVERRIDE;
 
   //////////////////////////////////////////////////////////////////////////////
-  // Calbacks.
+  // Callbacks.
   void UpdateNetworkStatus(
       const std::string& path, const std::string& key, const Value& value);
 
@@ -114,6 +116,11 @@ class NetworkLibraryImplCros : public NetworkLibraryImplBase  {
   void NetworkDeviceUpdate(const std::string& device_path,
                            const base::DictionaryValue* properties);
 
+  // Second half of refreshing IPConfig for a network.  Refreshes all IP config
+  // paths found in properties.
+  void RefreshIPConfigCallback(const std::string& device_path,
+                               const base::DictionaryValue* properties);
+
  private:
   // This processes all Manager update messages.
   bool NetworkManagerStatusChanged(const std::string& key, const Value* value);