[script-write-twice-transform.https.html]
  bug: 1709960
  expected:
    if (os == "mac") and debug: [OK, TIMEOUT]
    if (os == "mac") and not debug: [OK, TIMEOUT]
  [video exchange with write twice transform]
    bug: 1709960
    expected:
      if (os == "mac") and not debug: [PASS, TIMEOUT]