This is a testharness.js-based test. FAIL Update should be triggered after a functional event when last update time is over 24 hours promise_test: Unhandled rejection with value: object "TypeError: frame.contentWindow.load_image is assert_unreached: unregister should not fail: Failed to get a function" ServiceWorkerRegistration: The URL protocol of the current origin ('file://') is not supported. Reached unreachable code Harness: the test ran to completion.