The following layout test is flaky on Mac. Flakiness dashboard only shows it fail on leaks bot, but I also saw it locally on a Mountain Lion WK1 release test run.
A couple of diffs:
+FAIL('e' was:33.41444396972656, expected:25)FAIL('f' was:66.82888793945312, expected:50)FAIL('e' was:58.38405227661133, expected:50)FAIL('f' was:116.76810455322266, expected:100)
+FAIL('a' was:1.9412479238817468, expected:1.5)FAIL('d' was:3.8237437716452405, expected:2.5)FAIL('e' was:94.12479400634766, expected:50)FAIL('f' was:188.2495880126953, expected:100)
Marked as flaky in r156585.
*** This bug has been marked as a duplicate of bug 48451 ***