Roll src/third_party/dart 2b3336b51e..41d3971e83 (3 commits)

dart-lang/sdk@41d3971e83 [corelib] Fix truncation errors in int.modPow
dart-lang/sdk@f77093145a [corelib] Test for overflow in int.modPow()
dart-lang/sdk@6073489539 Add diagnostic for undefined getters and setters invoked on an extension override

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': '2b3336b51eda58fe049c8a8d81b7576aaa98c218',
+  'dart_revision': '41d3971e833e3d70c18cebee033ee80f347cebbe',
 
   # 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: ea5959d5c31d7d372deccee8d1e50e4b
+Signature: 889e35fc50545da0e4a8f2a3d5666d82
 
 UNUSED LICENSES: