This is a testharness.js-based test.
[FAIL] Test method 'getAutoplayPolicy(AutoplayPolicyMediaType type)'
  window.navigator.getAutoplayPolicy is not a function
[FAIL] Test method 'getAutoplayPolicy(HTMLMediaElement element)'
  window.navigator.getAutoplayPolicy is not a function
[FAIL] Test method 'getAutoplayPolicy(AudioContext context)'
  window.navigator.getAutoplayPolicy is not a function
Harness: the test ran to completion.