[medium-duration-threshold.html]
  expected:
    if (os == "android") and fission: [OK, TIMEOUT]
  [PerformanceObserver observes events according to its durationThreshold]
    expected:
      if (os == "linux") and debug and fission and swgl: [PASS, FAIL]
      if (os == "linux") and debug and not fission: [PASS, FAIL]
      if (os == "linux") and not debug: [PASS, FAIL]
      if (os == "mac") and debug: [PASS, FAIL]