Currently we disable things like storage if cookies are blocked for an origin. We should also disable and revoke service worker registrations in this case. Consider this failure mode: 1) Visit a site with a service worker like https://blog.wanderview.com 2) Open Options->Privacy and set History to "Use custom settings for history". Then click on "Exceptions" for cookies and add a block for the site used in step (1). 3) Wait at least 30 seconds from step 1 so the original service worker exits. 4) Reload the page in step 1. 5) Observe that you get a Corrupted Content page. The web console shows "Failed to load ‘https://blog.wanderview.com/’. A ServiceWorker passed a promise to FetchEvent.respondWith() that rejected with ‘TypeError: cache is undefined’." This is happening because we block storage like Cache API when cookies are disabled. So the service worker script hits a bunch of errors it does not expect. We should really disable the service worker completely in this case, though, so that the site continues to work.
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