tree 3a19016b1c0880bccdcea1c0e018b789e1436ce3
parent 709df794042aee515e31c59c1dba63f6727659b4
author Paul Berry <paulberry@google.com> 1559528426 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1559528426 +0000

Remove NullabilityMigrationAssumptions class.

This was a lot of bookkeeping for very little added value.  If we want
to experiment with changing the behavior of the migration tool in the
future, we should experimentally change it and see whether the quality
of the migration improves; it's not worth speculatively keeping
multiple behaviors around while the tool is being developed.

Change-Id: I9a59e2626be7e9e84a937e287421abcdc971aba5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/104482
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>