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