Via https://webkit.org/performance/ https://webkit.org/performance/ : > If a patch lands that regresses performance according to our benchmarks, then the perso

Via https://webkit.org/performance/ https://webkit.org/performance/ : > If a patch lands that regresses performance according to our benchmarks, then the person responsible must either back the patch out of the tree or drop everything immediately and fix the regression. I imagine that a security hotfix would lead almost immediately to the second situation (perhaps as soon as the implementor had gotten some sleep!)