Layout test fast/forms/datalist/update-range-with-datalist.html is failing intermittently with image-only differences on Win and Linux: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20chromium.org&showAllRuns=true&showExpectations=true&tests=fast%2Fforms%2Fdatalist%2Fupdate-range-with-datalist.html The differences are all around the "Run tests." button, not the actual sliders, and it's strange that it fails intermittently. Maybe the button is focused part of the time? Marking the test as flaky.