Roll src/third_party/dart fbe9f6115d2f..0b819161d778 (3 commits) (#16888)

DEPS

@@ -34,7 +34,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'fbe9f6115d2fac78c5dd4a044b34e2d493edd32c',
+  'dart_revision': '0b819161d778de8bb32ebc8574891cb9f206dc05',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py

ci/licenses_golden/licenses_third_party

-Signature: fa42072f1e498d8c20e3a378f2f0a0ee
+Signature: 4b9a2e3b748a6f9592207c2efc12f0e9
 
 UNUSED LICENSES: