20170627030204
https://hg.mozilla.org/releases/comm-esr52/rev/9e688e245e3075dc5b9c7f719b49f57aaf1c2b1b
https://hg.mozilla.org/releases/mozilla-esr52/rev/c41f37d913e205e08dac3f1a1f530d37c6b34e72