BUG=angleproject:1005

Change-Id: I8f2a6c0a5a6157303e436b96cc4c4ff1c29cfe18
Reviewed-on: https://chromium-review.googlesource.com/271600Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>