Roll src/third_party/dart b158bf7..5244d99 (1 commits) (flutter-team-archive#16517)

Author: skia-flutter-autoroll

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': 'b158bf7bd537f0ae8dc520df90bbb99bc2146efe',
+  'dart_revision': '5244d99a5d4e5f9c5561a040024ad79863fa5b9f',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py