20170608030206
https://hg.mozilla.org/releases/comm-esr52/rev/d0c1e4614f08f4b34cf9c54299c38adf68b76af6
https://hg.mozilla.org/releases/mozilla-esr52/rev/ee90af45f7b0a14bd4da8c71f9f42e059e65e6ac