b61a085c60
This also removes the dependency on the state (!) in ir.TypeEnvironment. Change-Id: I0180d111ecf45b685c4abce12c6a9bd52c1f308e Reviewed-on: https://dart-review.googlesource.com/c/88968 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>