LayoutTest inspector/unit-tests/heap-snapshot-collection-event.html is a flaky timeout The test was added with <http://trac.webkit.org/changeset/201183> <http://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=inspector%2Funit-tests%2Fheap-snapshot-collection-event.html>
Marked as flaky in <http://trac.webkit.org/projects/webkit/changeset/201297>
<rdar://problem/28213533>