plugins/quicktime-plugin-replacement.html is frequently failing on Mac Mavericks: <http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=plugins%2Fquicktime-plugin-replacement.html> -PASS embed.GetMaxBytesLoaded() is 24962 +FAIL embed.GetMaxBytesLoaded() should be 24962. Threw exception Error: IndexSizeError: DOM Exception 1
Marked as flaky in <http://trac.webkit.org/r171187>.
This test for an iOS-only feature was skipped on macOS in r269637.
<rdar://problem/71247913>