Fixing deps issue with one builbot tester

TBR=ashleymarie@chromium.org

Change-Id: I8ab27cd1bf46467b4a7a25c87f3aef33eb10f9eb
Reviewed-on: https://chromium-review.googlesource.com/943724


Reviewed-by: Emily Hanley <eyaich@chromium.org>
Commit-Queue: Emily Hanley <eyaich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#540228}