BUG=angleproject:1510

Change-Id: I9ed7c877767909ba93e2ea5ef09c4735b0d0bcc7
Reviewed-on: https://chromium-review.googlesource.com/382652
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>