c02a050721
This can be used by the front end to detect when to add synthetic break statements to switches involving patterns. Bug: https://github.com/dart-lang/sdk/issues/50624 Change-Id: I783b0920b8dc6ccbc7af8062fba7bfdeaa9dd9cc Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/273800 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Paul Berry <paulberry@google.com>