[co19] Roll co19 to ca44d7a864e0fb9d214be16818f56a485ab778c1

2020-07-08 [email protected] Fixes 797. LibTest\collection\HasNextIterator migrated to null safety
2020-07-08 [email protected] Fixes 796. LibTest\collection\IterableMixin migrated to null safety
2020-07-08 [email protected] Fixes 795. LibTest\collection\IterableBase migrated to null safety
2020-07-08 [email protected] Fixes 794. LibTest\collection\LinkedHashMap migrated to null safety
2020-07-08 [email protected] Fixes 792. LibTest\core\Map migrated to null safety
2020-07-08 [email protected] Fixes 791. LibTest\collection\Queue migrated to null safety
2020-07-08 [email protected] Fixes 789. LibTest\collection\HashMap migrated to null safety
2020-07-07 [email protected] Fixed issue 790: LibTest\convert\Base64Encoder tests adopted to nnbd
2020-07-07 [email protected] Fixed issue 790: LibTest\convert\Base64Codec tests adopted to nnbd
2020-07-07 [email protected] Fixed issue 790: LibTest\convert\AsciiCodec tests adopted to nnbd
2020-07-07 [email protected] Fixed issue 602: Added tests for least and greatest closure with nnbd.
2020-07-07 [email protected] Fixed issue 785: Updated expected results for future flattening tests in nnbd-weak mode.
2020-07-07 [email protected] Fixes 788. LibTest\collection\DoubleLinkedQueueEntry migrated to null safety
2020-07-07 [email protected] Fixes 787. LibTest\collection\DoubleLinkedQueue migrated to null safety

#42584

Change-Id: I14d3ff4856296c66a403e1c1a9d767deb0af3f80
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/153604
Reviewed-by: William Hesse <[email protected]>
Reviewed-by: Nicholas Shahan <[email protected]>

DEPS

@@ -44,7 +44,7 @@ vars = {
   # co19 is a cipd package. Use update.sh in tests/co19[_2] to update these
   # hashes. It requires access to the dart-build-access group, which EngProd
   # has.
-  "co19_rev": "bbba568b780a48c69a1de8ad1a8527a37cf71fad",
+  "co19_rev": "ca44d7a864e0fb9d214be16818f56a485ab778c1",
   "co19_2_rev": "620c1148c8b7a3d7f74afacf348c46f109eb64f2",
 
   # The internal benchmarks to use. See go/dart-benchmarks-internal