[iframe-connectionallowlist-reflection.html]
  [connectionAllowlist IDL attribute is exposed on HTMLIFrameElement]
    expected: FAIL

  [connectionAllowlist reflects the empty string when the attribute is unset]
    expected: FAIL

  [connectionAllowlist setter reflects to the content attribute]
    expected: FAIL

  [connectionAllowlist getter reflects from the content attribute]
    expected: FAIL