9185294e7a
Relands https://dart-review.googlesource.com/c/sdk/+/76061 Was reverted in https://dart-review.googlesource.com/c/sdk/+/76301 The difference with the original CL is that we don't look into superclass and mixins of mixed-in for concrete members. This reduces the number of errors in Flutter codebase to 1. R=brianwilkerson@google.com Bug: https://github.com/dart-lang/sdk/issues/34392 Change-Id: I86256b598d116439194cbaf4d09b4f72013d6563 Reviewed-on: https://dart-review.googlesource.com/76340 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>