The following layout test is flaky on all Chromium platforms fast/forms/date/calendar-picker-appearance.html Probable cause: Unknown. Gray color is not stable?
http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&showLargeExpectations=true&tests=calendar-picker-appearance
It seems the flakiness happens only on Release build.
It seems http://trac.webkit.org/changeset/132028 fixed this. Thanks!