`browser_timezone.js` but I don't think it's related. https://treeherder.mozilla.org/jobs?repo=try-comm-central&revision=f7b1a46b521c4e894fc450b9d32cf2e14b554520
Bug 1669803 Comment 32 Edit History
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`browser_timezones.js` fails on OSX but I don't think it's related to this patch. https://treeherder.mozilla.org/jobs?repo=try-comm-central&revision=f7b1a46b521c4e894fc450b9d32cf2e14b554520