This is a testharness.js-based test.
[FAIL] Check referenced MediaSource can open after URL.revokeObjectURL(url).
  assert_unreached: Unexpected error. Reached unreachable code
[FAIL] Check auto-revoking behavior with URL.createObjectURL(MediaSource).
  assert_unreached: url should not reference MediaSource. Reached unreachable code
Harness: the test ran to completion.