5a28f14a25
Adds a test to verify that JS interop and anonymous classes can properly extend one another and that member access behaves as expected. Change-Id: I98b77444363ec3f985a9a10f3716e15a7fd970f5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/164882 Reviewed-by: Sigmund Cherem <sigmund@google.com>