[webkit-perspective-valid.tentative.html]
  [e.style['-webkit-perspective'\] = "1000" should set the property value]
    expected:
      if (os == "mac") and not debug: [PASS, FAIL]

  [e.style['-webkit-perspective'\] = "25" should set the property value]
    expected:
      if (os == "mac") and not debug: [PASS, FAIL]