This is a testharness.js-based test.
Found 2 FAIL, 0 TIMEOUT, 0 NOTRUN.
[FAIL] Document interface: calling parseHTMLUnsafe((TrustedHTML or DOMString), optional ParseHTMLUnsafeOptions) on iframe.contentDocument with too few arguments must throw TypeError
  assert_own_property: interface object must have static operation as own property expected property "parseHTMLUnsafe" missing
[FAIL] Document interface: calling parseHTML(DOMString, optional SetHTMLOptions) on iframe.contentDocument with too few arguments must throw TypeError
  assert_own_property: interface object must have static operation as own property expected property "parseHTML" missing
Harness: the test ran to completion.