This is a testharness.js-based test.
[FAIL] Tests that multiple read requests are eventually settled
  promise_test: Unhandled rejection with value: object "ReferenceError: VideoTrackGenerator is not defined"
[FAIL] Tests that MediaStreamTrackProcess respects track.enabled
  promise_test: Unhandled rejection with value: object "ReferenceError: VideoTrackGenerator is not defined"
Harness: the test ran to completion.