Print current file in ASSERT macro failures. Bug: angleproject:3436 Change-Id: If912ae75c96c34b27967f592910c2ee3403b24cc Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1602178 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>