GitLab

Using MAC_ANY caused it to pick up Mac 10.15 machines, which don't
support the GN args currently used by mac-rel. Which causes them to fail
quickly and then get re-used frequently. Until we determine the solution
going forward, changing the os dimension will get the builds back to
green.

# mac-rel is broken, this change will fix it

Bug: 1073694, 1073965
Change-Id: I2620c570c443be89f27ace27cbbd9c3c25cd4010
No-Try: True
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2163151
Commit-Queue: Garrett Beaty <gbeaty@chromium.org>
Auto-Submit: Garrett Beaty <gbeaty@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/master@{#762008}