--- a/dom/network/interfaces/nsIMobileConnectionProvider.idl
+++ b/dom/network/interfaces/nsIMobileConnectionProvider.idl
@@ -30,29 +30,38 @@ interface nsIMobileConnectionListener : 
   void notifyIccChanged();
   void notifyRadioStateChanged();
 };
 
 /**
  * XPCOM component (in the content process) that provides the mobile
  * network information.
  */
-[scriptable, uuid(0e027520-dd87-461d-88a6-c3e46369c03c)]
+[scriptable, uuid(55b8d918-8631-4d72-a9d7-f8c9536d6e6f)]
 interface nsIMobileConnectionProvider : nsISupports
 {
   /**
    * Called when a content process registers receiving unsolicited messages from
    * RadioInterfaceLayer in the chrome process. Only a content process that has
    * the 'mobileconnection' permission is allowed to register.
    */
   void registerMobileConnectionMsg(in unsigned long clientId,
                                    in nsIMobileConnectionListener listener);
   void unregisterMobileConnectionMsg(in unsigned long clientId,
                                      in nsIMobileConnectionListener listener);
 
+  /**
+   * These two fields require the 'mobilenetwork' permission.
+   */
+  DOMString getLastKnownNetwork(in unsigned long clientId);
+  DOMString getLastKnownHomeNetwork(in unsigned long clientId);
+
+  /**
+   * All fields below require the 'mobileconnection' permission.
+   */
   nsIDOMMozMobileConnectionInfo getVoiceConnectionInfo(in unsigned long clientId);
   nsIDOMMozMobileConnectionInfo getDataConnectionInfo(in unsigned long clientId);
   DOMString getIccId(in unsigned long clientId);
   DOMString getNetworkSelectionMode(in unsigned long clientId);
   DOMString getRadioState(in unsigned long clientId);
 
   nsIDOMDOMRequest getNetworks(in unsigned long clientId,
                                in nsIDOMWindow window);