BUG=angleproject:891

Change-Id: I88a8bcc4a6911c92bdb981aca34a0557ad451df7
Reviewed-on: https://chromium-review.googlesource.com/303390Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>