BUG=angleproject:1649

Change-Id: Ie613ae835ea3e7c590f74429bdd36f7a42045131
Reviewed-on: https://chromium-review.googlesource.com/811905
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>