The following layout test is flaky on all platforms, and has been for some time. fast/layers/scroll-with-transform-composited-layer.html
The results shown on the Chromium dashboard are super weird for this test. It looks like we get the results from another test and empty results (either black or white depending on the platform): http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&tests=fast%2Flayers%2Fscroll-with-transform-composited-layer.html The test is still flaky though.