BUG=angleproject:1569

Change-Id: I0e47720d17cd1a29603e471482cac31d4c281ee5
Reviewed-on: https://chromium-review.googlesource.com/735059Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>