This should allow for better parallelization when running these tests.

Change-Id: Ib3cae7d6e8f0d2608470ca616eeac7eecae3b7ab
Reviewed-on: https://chromium-review.googlesource.com/c/1318094Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57256}