do_GetService( const nsCID& aCID, nsISupports* aServiceManager, nsresult* error = 0 )
do_GetService( const char* aContractID, nsresult* error)
do_GetService( const nsCID& aCID, nsISupports* aServiceManager, nsresult* error = 0 ){    return nsGetServiceByCID(aCID, aServiceManager, error);}