Coming to Chrome 65: Local Overrides. Make a tweak and DevTools saves the changed file to a location of your choosing. On next load, DevTools loads the local file rather than going to the network. https://developers.google.com/web/updates/2018/01/devtools#overrides …pic.twitter.com/tQc0DrQsnW
As long as the URL stays the same, I think that it'll keep serving the local file until you disable local overrides (haven't tested though) --- @kaycebasques