BUG=angleproject:1468

Change-Id: I8dfc9a3c71e5638de22bc9d9a5dadfb495ef23a7
Reviewed-on: https://chromium-review.googlesource.com/388846
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>