BUG=angleproject:2137

Change-Id: I5d840fcd7fda85d7c33a2f261586e8c3733b9781
Reviewed-on: https://chromium-review.googlesource.com/661419Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>