This will ensure a smoother update process.

Bug: angleproject:2344
Change-Id: I81bf496ea013825588b1baa573855ce809a8decf
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2842355Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>