The two interface classes make it clearer which methods are intended
to be used by ConstraintGatherer vs. ConstraintVariableGatherer, and
refactoring DecoratedType.forElement paves the way for a future CL
that will handle constraints on inferred types.
Change-Id: Ibd2f22ea9d38df7be1c4da0e4eef2006556b7351
Reviewed-on: https://dart-review.googlesource.com/c/91851
Auto-Submit: Paul Berry <paulberry@google.com>
Commit-Queue: Dan Rubel <danrubel@google.com>
Reviewed-by: Dan Rubel <danrubel@google.com>
Paul Berry
d45a6ec893