After http://trac.webkit.org/changeset/58191/ caret-rtl-2 started failing. It probably just needs a rebaseline. http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=editing%2Fselection%2Fcaret-rtl-2.html&showExpectations=true&useWebKitCanary=true shows what's actually going on. From visual inspection, it seems as though the baseline is a bit more washed out, so I'm actually not entirely sure whether it's a bot issue.
Anyway, will add to test_expectations and rebaseline downstream.
Checked in test expectation here: http://src.chromium.org/viewvc/chrome?view=rev&revision=45573 Will rebaseline once the bot picks it up.
OK. I'm stupid. I should have just added the exception upstream rather than down...
Anyway, here's a CL for rebaslining in Chromium: https://bugs.webkit.org/show_bug.cgi?id=38126