BUG=angleproject:1291

Change-Id: I4fc8cc152bb5ef18fff78bf312a14691e9de0243
Reviewed-on: https://chromium-review.googlesource.com/324030
Tryjob-Request: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>