Useful for binary size attribution (and bug filing)

Change-Id: Ie77a331deff7094f8a386082141fbc49d902dd2a
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1528926Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>