GitLab

This fixes errors while building universal binary diff tools on official
builders. This didn't surface in https://crrev.com/c/2462242 because the
trybots don't build with official settings, so don't run dsymutil.

BUG=1119472

Change-Id: Ic6a29205cff50746ad25a0944bf961907af910a3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2488710Reviewed-by: Mark Mentovai <mark@chromium.org>
Reviewed-by: Michael Moss <mmoss@chromium.org>
Commit-Queue: Michael Moss <mmoss@chromium.org>
Auto-Submit: Michael Moss <mmoss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819536}