906647c046
`CommandRunner.run` will return a `Future<T>` and in this case the `T` is `dynamic`. Change-Id: Ief156cfc298d3747da805c26e81d34ed7628d00b Reviewed-on: https://dart-review.googlesource.com/66520 Reviewed-by: Jenny Messerly <jmesserly@google.com> Commit-Queue: Nate Bosch <nbosch@google.com>