4bd9df1e2b
We don't support augmentations feature yet, and it turned out to be complicated finishing migration while keeping the current implementation. Change-Id: I035ecfa74cc107bd9d21a935f76d92987835f542 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/413940 Reviewed-by: Paul Berry <paulberry@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>