e2597dfba7
This reverts commit 53cd0b4af1.
The commit causes failures in the VM's precompiler because its mixin
deduplication transformation apparently needs to distinguish between
anonymous and named mixins.
Change-Id: I3861a3bf90b10f627d5fc8f0e94f117c102422d7
Reviewed-on: https://dart-review.googlesource.com/56780
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Commit-Queue: Kevin Millikin <kmillikin@google.com>