BUG=angleproject:1523

Change-Id: Id1dd5d0426c1b55bfd6cca8b0c8c73596080f2a9
Reviewed-on: https://chromium-review.googlesource.com/688101Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>