f6db874416
Most notably this fixes mixins, but a few others issues were discovered as well. Fixes #32428. This gets dartdevk closer to producing a valid Dart SDK file Change-Id: I2973baef279d6b71ed29b97bec758b2d3209c275 Reviewed-on: https://dart-review.googlesource.com/51760 Commit-Queue: Jenny Messerly <jmesserly@google.com> Reviewed-by: Vijay Menon <vsm@google.com>