5ade5079b1
This flag has been enabled since Dart 2.2.0. Change-Id: I18e77e1659d4be1aaf06e1c2a6262ae9e8c7f922 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/104760 Commit-Queue: Kevin Millikin <kmillikin@google.com> Reviewed-by: Dan Rubel <danrubel@google.com>