0 0 0 Dart

Run tests in dart2 mode. (#16675)

* Run tests in dart2 mode.

* Fix type check

* Drop --checked, leave --preview-dart-2

* Remove debugging leftovers.

Alexander Aprelev committed 8y ago

6bd6897014266ecca5e2a1b4c51961830db24b57

Parent: 3a0aabc

Committed by GitHub <noreply@github.com> on 4/18/2018, 6:24:54 PM