893d3e86dd
Simplify handling of Never and add comments in AbstractType::IsSubtypeOf. Change-Id: Ie312944b380ff6a3f4ba59bf2a564d402110faa8 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/135352 Commit-Queue: Régis Crelier <regis@google.com> Reviewed-by: Liam Appelbe <liama@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com>