George Kalpakas b953a0c5a5 refactor(service-worker): notify clients about updates in parallel (#40234)
Previously, clients were notified about updates sequentially. This
wasn't necessary.

This commit changes the `Driver#notifyClientsAboutUpdate()` method to
notify the clients in parallel (by switching from `Array#reduce()` to
`Array#map()` and `Promise.all()`).

This also aligns the `notifyClientsAboutUpdate()` method with the
`notifyClientsAboutUnrecoverableState()` method.

PR Close #40234
2021-01-11 10:42:49 -08:00
..