The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/48d251f9bfe6b49da2b47e63cebf088bac364391

commit 48d251f9bfe6b49da2b47e63cebf088bac364391
Author: Jamie Walch <jamiewalch@chromium.org>
Date: Wed Oct 18 20:02:46 2017

Add XMPP logging.

Bug:  775748 
Change-Id: Id49b1a54fbcbb4ead1b093822be59753420ef983
Reviewed-on: https://chromium-review.googlesource.com/724293
Commit-Queue: Jamie Walch <jamiewalch@chromium.org>
Reviewed-by: Kelvin Poon <kelvinp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#509846}
[modify] https://crrev.com/48d251f9bfe6b49da2b47e63cebf088bac364391/remoting/webapp/base/js/xmpp_connection.js
[modify] https://crrev.com/48d251f9bfe6b49da2b47e63cebf088bac364391/remoting/webapp/base/js/xmpp_login_handler.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/26131f43639db30d7e5cdb395819a70242140ade

commit 26131f43639db30d7e5cdb395819a70242140ade
Author: Jamie Walch <jamiewalch@chromium.org>
Date: Thu Oct 19 18:31:15 2017

Add XMPP logging.

Bug:  775748 
Change-Id: Id49b1a54fbcbb4ead1b093822be59753420ef983
Reviewed-on: https://chromium-review.googlesource.com/724293
Commit-Queue: Jamie Walch <jamiewalch@chromium.org>
Reviewed-by: Kelvin Poon <kelvinp@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#509846}(cherry picked from commit 48d251f9bfe6b49da2b47e63cebf088bac364391)
Reviewed-on: https://chromium-review.googlesource.com/728403
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Cr-Commit-Position: refs/branch-heads/3239@{#80}
Cr-Branched-From: adb61db19020ed8ecee5e91b1a0ea4c924ae2988-refs/heads/master@{#508578}
[modify] https://crrev.com/26131f43639db30d7e5cdb395819a70242140ade/remoting/webapp/base/js/xmpp_connection.js
[modify] https://crrev.com/26131f43639db30d7e5cdb395819a70242140ade/remoting/webapp/base/js/xmpp_login_handler.js

This got already merged at #5. Hence, removing "Merge-Request-63" label. 

jamiewalch@, is the change look good in Canary?

It's a Chromoting change, so it won't appear in Chrome canary.