2f09d05758
Allows classes with simple "extends" hierarchies and no type arguments to be linked across library boundaries. Change-Id: I02c75a8c0000498dd0f8458429f782810ca3e628 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380209 Reviewed-by: Mark Zhou <markzipan@google.com> Commit-Queue: Nicholas Shahan <nshahan@google.com> Reviewed-by: Nate Biggs <natebiggs@google.com>