This is a testharness.js-based test.
[FAIL] Blob URLs can be used in iframes, and are treated same origin
  Failed to read a named property 'test_result' from 'Window': Blocked a frame with origin "null" from accessing a cross-origin frame.
[FAIL] Blob URL fragment is implemented.
  Failed to set a named property 'onscroll' on 'Window': Blocked a frame with origin "null" from accessing a cross-origin frame.
[FAIL] Revoke blob URL after open(), will fetch
  assert_unreached: Got unexpected error event Reached unreachable code
[FAIL] Revoke blob URL after creating Request, will fetch
  promise_test: Unhandled rejection with value: object "TypeError: Failed to fetch"
[FAIL] Revoke blob URL after creating Request, then clone Request, will fetch
  promise_test: Unhandled rejection with value: object "ReferenceError: garbageCollect is not defined"
Harness: the test ran to completion.