GitLab

msan builds skip optimizations because of past issues instrumenting
the assembly.

R=tomfinegan@chromium.org

Change-Id: I4ec4195687b54b85e12e21bbb16666ef4dcb8658
Reviewed-on: https://chromium-review.googlesource.com/806634
Commit-Queue: Johann Koenig <johannkoenig@google.com>
Reviewed-by: Tom Finegan <tomfinegan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521408}