11a01c8fad
Progress bar largely taken from https://github.com/dart-lang/sdk/blob/main/pkg/nnbd_migration/lib/src/utilities/progress_bar.dart If there's a good common place (in package:analyzer?) to put this, I'd be happy to do so. Change-Id: Ic64ac98d8a8f5ae1cc036932364f37f10b837055 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/241623 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>