[co19] Roll co19 to a6f62f2024492b2c79b741d4b96e67fce31a9830

2019-08-07 [email protected] 389. More NNBD static errors tests added
2019-08-06 [email protected] 389. Change NNBD tests to be in accordance with the spec
2019-08-06 [email protected] Fixed Issue 468: typo corrected.
2019-08-06 [email protected] Fixed Issue 467: test updated to throw runtime exception instead of compile time error.
2019-08-02 [email protected] Fixed Issue 457:  added test which checks that static member of an extension cannot be accessed through an extension override.
2019-08-02 [email protected] Fixes 428. Make test stronger (choose static types explicitly)
2019-08-01 [email protected] Static extension methods: additional check that extension on dynamic has no effect
2019-08-01 [email protected] Fixed Issue 429: more cases for testing added.
2019-08-01 [email protected] Fix for 428. Wrong tests renamed, existing one rewritten to test type inference
2019-08-01 [email protected] Fixes 456. Use correct tearoff function
2019-08-01 [email protected] Fixes 454. Fix typos
2019-08-01 [email protected] Fixes 454. Fix typos
2019-08-01 [email protected] Fixes 453. Make operator argument covariant
2019-08-01 [email protected] Fixed Issue 452: typo corrected.
2019-08-01 [email protected] Fixed Issue 451: typo corrected.
2019-08-01 [email protected] Fixed Issue 450: typo corrected.

Change-Id: I8837e0c02c96bc2473bb6c6bc19b1e11c5efe5c6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112241
Reviewed-by: William Hesse <[email protected]>

Author: athomas

DEPS

@@ -36,7 +36,7 @@ vars = {
   "chromium_git": "https://chromium.googlesource.com",
   "fuchsia_git": "https://fuchsia.googlesource.com",
 
-  "co19_2_rev": "796f4de76de460e031bf3b20ce60a52e4ed417d9",
+  "co19_2_rev": "a6f62f2024492b2c79b741d4b96e67fce31a9830",
 
   # As Flutter does, we use Fuchsia's GN and Clang toolchain. These revision
   # should be kept up to date with the revisions pulled by the Flutter engine.