[ShadowRoot-createElement.tentative.html]
  [ShadowRoot.createElement() for autonomous custom element]
    expected: FAIL

  [ShadowRoot.createElementNS() for autonomous custom element]
    expected: FAIL

  [ShadowRoot.createElement() for customized built-in element]
    expected: FAIL

  [ShadowRoot.createElementNS() for customized built-in element]
    expected: FAIL