[ServiceWorker] Define the lifetime of a blob URL created inside a service worker (#688)

Right now in Gecko at least we tie the lifetime of such URLs to the Worker or SharedWorker that created them, but doing the same (as in, invalidating the blob URL when the service worker goes away) seems wrong, since that can happen at any time at UA's discretion.

How should we handle this?

One option that comes to my mind right now is keeping those URLs valid until the service worker that registered them is unregistered.

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Reply to this email directly or view it on GitHub:
https://github.com/slightlyoff/ServiceWorker/issues/688