[ServiceWorker] Service worker not receiving fetch events from iframe with Blob URL source. (#712)

I have a document under the scope of running service worker.  It contains an `<iframe>` with a Blob URL as a `src`.  The blob URL was constructed in the outer document context and should therefore be [of the same origin](https://w3c.github.io/FileAPI/#originOfBlobURL) as the Service Worker; however, the service worker does not receive any `fetch` events from the inner document.

My service worker is registered to a scope of `'/'`.

Is this the expected behavior (no fetch events for blob URL documents created at the service worker's origin) or a bug?

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Reply to this email directly or view it on GitHub:
https://github.com/slightlyoff/ServiceWorker/issues/712