[autoplay-hidden.optional.html]
  expected:
    if (os == "linux") and not debug and not asan and not tsan: [OK, TIMEOUT]
    if (os == "android") and sessionHistoryInParent and debug: TIMEOUT
    if (os == "android") and sessionHistoryInParent and not debug: [OK, ERROR, TIMEOUT]
    if (os == "android") and not sessionHistoryInParent and not debug: [OK, ERROR, TIMEOUT]
    if os == "win": [OK, TIMEOUT]
    if os == "mac": [OK, TIMEOUT]
  [Allow delaying autoplay until video elements become visible]
    expected:
      if (os == "linux") and not debug and not asan and not tsan: [PASS, TIMEOUT]
      if os == "win": [PASS, TIMEOUT]
      if os == "mac": [PASS, TIMEOUT]