Add ANGLE commit position to version.h. Bug: b/168736059 Change-Id: If35210cfc91781cab6f40a1f03a4e82ada90690f Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2425196 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>