 call to window.performance.clearMeasures(\"" + measureName3 + "\"), where \"" + measureName3 +
                      "\" is a non-existent measure, window.performance.getEntriesByName(\"" + measureName2 + "\") " +
                      "returns an object containing the \"" + measureName2 + "\" measure.");

            // clear existent measure
            window.performance.clearMeasures(measureName1);

            // test that "measure1" was cleared
            entries = window.performance.getEntriesByNam