BUG=angleproject:2167

Change-Id: I33940288331a23b940753795e5e43b8cabcb87f5
Reviewed-on: https://chromium-review.googlesource.com/732189Reviewed-by: Frank Henigman <fjhenigman@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>