BUG=angleproject:884

Change-Id: I9e48803f6150b9d8cd70a36ab9197f78fd01a50f
Reviewed-on: https://chromium-review.googlesource.com/288583Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>