[variable-reference.html]
  expected:
    if (os == "android") and fission: [OK, TIMEOUT]
  [Variable reference left open at end of stylesheet]
    expected: FAIL

  [width: var(--prop,);]
    expected:
      if (os == "linux") and not debug: [PASS, FAIL]

  [width: var(prop);]
    expected: FAIL

  [width: var(-prop);]
    expected: FAIL

  [width: var(--prop 20px);]
    expected: FAIL

  [width: var(--prop, var(prop));]
    expected: FAIL

  [width: var(--prop, var(-prop));]
    expected: FAIL

  [width: var(20px);]
    expected: FAIL

  [width: var(var(--prop));]
    expected: FAIL