Service worker: FetchEvents for requests for same-origin favicons.

Category: Service Worker
Type: New or changed feature
Status: Enabled by default (Chrome 72)
Intent stage: None

Summary

Previously, technical limitations prevented service workers from receiving FetchEvents for favicon requests. Now, service workers receive FetchEvents as long as the request URL is on the same-origin as the service worker.

Standards & signals

Specification: https://w3c.github.io/ServiceWorker/
Firefox: No signal
Safari: No signal
Web developers: No signals
Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=448427

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