git-cl upload: Send mail when starting CQ
git-cl upload: Send mail when starting CQ

R=a30c74fa30536fe7ea81ed6dec202e35e149e1fd@chromium.org

Bug: 762009
Change-Id: I29a4ca06e0d29f5acb6c516d413fa2a35f8a5629
Reviewed-on: https://chromium-review.googlesource.com/661317
Reviewed-by: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@chromium.org>
Commit-Queue: Aaron Gable <bbed39beedae4cdb499af742d2fcd6c63934d93b@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools