BUG=angleproject:1649

Change-Id: I1e72c31d7c9497ad14039a8d3fb97317ab193cb2
Reviewed-on: https://chromium-review.googlesource.com/559107Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>