[push] Trigger a chat notification when a push is done.
[push] Trigger a chat notification when a push is done.

BUG=skia:

Change-Id: I71c1099a34dc304b3514411d7c54063492bf6b3c
Reviewed-on: https://skia-review.googlesource.com/10470
Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>
Commit-Queue: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot