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chromium/third_party/blink/web_tests/editing/undo/orphaned-selection-crash-bug32823-3.html 

<BODY></BODY>
<SCRIPT>
  if (window.testRunner)
    testRunner.dumpAsText();
  document.designMode="on";
  document.execCommand("selectall");
  document.execCommand("InsertHorizontalRule");
  document.execCommand("SelectAll");
  document.execCommand("ForwardDelete");
  document.designMode="off";
  document.execCommand("undo");
  document.designMode="on";
  document.execCommand("ForeColor",false,3);
  document.body.innerHTML='PASS';
</SCRIPT>