BUG=angleproject:1354

Change-Id: I70738d2f00e283ddc52b1545f8efda9022110487
Reviewed-on: https://chromium-review.googlesource.com/391090
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>