tree efa39d52bfa14d2bf90418f35e1347c4580fbfb6
parent 9ec7b3ebea7edff4b6be3ba60180dcdc92d7e2bb
author Paul Berry <paulberry@google.com> 1561569836 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1561569836 +0000

Migration: Handle contravariant uses of already-migrated classes.

Change-Id: I1ce1adc1975461010ce993ba31ac74856033351e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/107320
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>