Resync web-platform-tests/service-workers from upstream.
Created attachment 403712 [details] Patch
Comment on attachment 403712 [details] Patch r=me
Created attachment 403720 [details] Patch
Committed r264043: <https://trac.webkit.org/changeset/264043> All reviewed patches have been landed. Closing bug and clearing flags on attachment 403720 [details].
<rdar://problem/65196408>