BUG=angleproject:1145

Change-Id: I5a0a667621aceedb4662cfb2356d7dbd0d9f7718
Reviewed-on: https://chromium-review.googlesource.com/285557Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>