[co19] Roll co19 to f65f3578f95415c9a2f3ad002aac7b507549e64a
[co19] Roll co19 to f65f3578f95415c9a2f3ad002aac7b507549e64a

2020-05-07 irina.arkhipets@gmail.com Fixed Issue 630: test expectation updated.
2020-05-07 irina.arkhipets@gmail.com Fixed Issue 637: test updated.
2020-05-07 irina.arkhipets@gmail.com Fixed Issue 636: Test expected result corrected.
2020-05-07 irina.arkhipets@gmail.com Fixed Issue 635: Tests updated according the recent Spec changes, "consolidated" model is now supported.
2020-05-07 irina.arkhipets@gmail.com Issue 633: Utils common function re-named.
2020-05-06 irina.arkhipets@gmail.com Fixed Issue 633: Missing class declaration added to common utils.
2020-05-05 sgrekhov@unipro.ru Fixes 629. In a weak mode allow increasing list length
2020-05-04 sgrekhov@unipro.ru Fixes 632. Add  Requirements=nnbd-weak
2020-05-01 irina.arkhipets@gmail.com Fixed Issue 628: typedef declarations corrected.
2020-04-30 irina.arkhipets@gmail.com Fixed Issue 607: compile-error tag corrected.
2020-04-30 irina.arkhipets@gmail.com Fixed Issue 607: Existing Instantiate-to-bounds/typedef/dinamic tests adopted to NNBD.
2020-04-30 irina.arkhipets@gmail.com Fixed Issue 607: Existing Instantiate-to-bounds/nonfunction_typedef/static tests adopted to NNBD.
2020-04-30 irina.arkhipets@gmail.com Fixed Issue 607: Existing Instantiate-to-bounds/nonfunction_typedef/dynamic tests adopted to NNBD.
2020-04-30 sgrekhov@unipro.ru 626. Fix API tests failures caused by breaking changes in API
2020-04-29 irina.arkhipets@gmail.com Fixed Issue 607: Existing Instantiate-to-bounds/class tests adopted to NNBD.
2020-04-29 irina.arkhipets@gmail.com Fixed Issue 624: overriding tests expected results updated.
2020-04-29 irina.arkhipets@gmail.com Fixed Issues 619, 623: nnbd top merge tests updated.
2020-04-29 sgrekhov@unipro.ru 478. Demotion via assignment tests added
2020-04-28 irina.arkhipets@gmail.com Fixed Issue 622: test updated and now returns a value of correct type.
2020-04-28 irina.arkhipets@gmail.com Fixed Issue 607: tags for the Issue 41684 added, tests updated.

Change-Id: I4c07fc722a4b45c8eee0cdda569f4acb42587de2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147120
Reviewed-by: William Hesse <a821cddceae7dc400f272e3cb1a72f400f9fed6d@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk