public void RemoveRequest(Request request, Interop.nsSupports aContext, int aStatus)
 {
     _loadGroup.RemoveRequest(request._request, aContext._nsISupports, aStatus);
 }
 public void AddRequest(Request request, Interop.nsSupports aContext)
 {
     _loadGroup.AddRequest(request._request, aContext._nsISupports);
 }