[git-cl] set math is done with | not +
[git-cl] set math is done with | not +

TBR=tandrii@chromium.org

Bug:

Change-Id: I1f533344b915bc4581739f508978f837a8c90f8c
Reviewed-on: https://chromium-review.googlesource.com/481073
Reviewed-by: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools