Make the UserContentController for ServiceWorker pages be non-optional
Created attachment 419464 [details]
Created attachment 419470 [details]
Created attachment 419483 [details]
Created attachment 419487 [details]
Created attachment 419622 [details]
Committed r272550: <https://commits.webkit.org/r272550>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 419622 [details].