See: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&tests=fast%2Fcss%2Foutline-auto-empty-rects.html
Created attachment 102493 [details] Patch
Committed r92107: <http://trac.webkit.org/changeset/92107>
Reopening to track the real fix, my patch just expects it to fail.
LayoutTest failures for Chromium are being marked WontFix. The Bug is still accessible and referenced from TestExpectations.