Method refresh

sql/sql_acl.cc:8718–8723

void GRANT_INFO::refresh(const Security_context *sctx,
                         const char *db, const char *table)
{
  if (version != grant_version)
    read(sctx, db, table);
}

void GRANT_INFO::read(const Security_context *sctx,
                         const char *db, const char *table)