With multiple content processes Service Workers don't currently work. This is tracked in bug 1231208. about:debugging allows to debug service workers. So, when Service Workers start to work in a multi-content-process environment, we'll need to make sure about:debugging also works and allows to debug those service workers.

This should "just work" once the service worker e10s refactor is done. Since we will only be allowing a particular service worker to spawn in a single content process across the browser about:debugging should only ever see one instance at a time.

Aboutdebugging triage. Filter on TRIAGE-JD201705 Setting as P3 for now since it's not actionable.