[onvisibilitychange.html]
  expected:
    if (os == "linux") and (processor == "x86_64") and not debug and fission and not asan and not tsan: [OK, TIMEOUT]
    if (os == "linux") and (processor == "x86_64") and not debug and not fission: [OK, TIMEOUT]
    if (os == "linux") and (processor == "x86"): [OK, TIMEOUT]
  [onvisibilitychange attribute is a proper event handler]
    expected:
      if (os == "linux") and (processor == "x86_64") and not debug and fission and not asan and not tsan: [PASS, NOTRUN]
      if (os == "linux") and (processor == "x86_64") and not debug and not fission: [PASS, NOTRUN]
      if (os == "linux") and (processor == "x86"): [PASS, NOTRUN]