862a894de6
Deprecate `retype` and forward it to `cast`. Change-Id: Ie17ffdd1eef0d3f19582bf638c5349927c7b5ebd Reviewed-on: https://dart-review.googlesource.com/53802 Commit-Queue: Lasse R.H. Nielsen <lrn@google.com> Reviewed-by: Leaf Petersen <leafp@google.com>