implementation-status: backlog
[autoplay-allowed-by-feature-policy-attribute-redirect-on-load.https.sub.html]
  expected:
    if os == "mac": [OK, TIMEOUT]
  [Feature-Policy allow="autoplay" disallows cross-origin navigation in an iframe.]
    expected:
      if os == "mac": [FAIL, TIMEOUT]
      FAIL

  [Feature-Policy allow="autoplay" allows same-origin navigation in an iframe.]
    expected:
      if os == "mac": [PASS, TIMEOUT]