language/covariant/type_parameter_test.dart performed a tearoff which
should incur a run-time error (because the dynamic type of the
tearoff is not a subtype of the static type, so it would be a
soundness violation to pass that value on to the next step of
evaluation).
Change-Id: Ia4ec813606e711cab0bdcc68d24bbac3c9a2d8c2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/209910
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Commit-Queue: Erik Ernst <eernst@google.com>
