8b555128be
Server already supports the opposite, so this just makes it possible to go both ways. This doesn't support converting a declaring function typed parameter. We could add that, but I'm hoping it's rare enough to not be worth doing. Other than that, I think I've covered all the cases, but please pay special attention to the test coverage. Change-Id: I400204ca820d0e0f1cc44075dd54946db79b2115 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/506740 Reviewed-by: Samuel Rawlins <srawlins@google.com> Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>