BUG=angleproject:1144

Change-Id: I42d80293c06e40197fe100bcac31a5c6bd414edf
Reviewed-on: https://chromium-review.googlesource.com/469106
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>