Update expectations.

tests/compiler/dart2js/kernel/visitor_test.dart

Index: tests/compiler/dart2js/kernel/visitor_test.dart
diff --git a/tests/compiler/dart2js/kernel/visitor_test.dart b/tests/compiler/dart2js/kernel/visitor_test.dart
index 3ccc4508b3dabe21e8f18fcdd073b1528f155f66..ebba93edd48f0cef07272e873e4b07f739c00721 100644
--- a/tests/compiler/dart2js/kernel/visitor_test.dart
+++ b/tests/compiler/dart2js/kernel/visitor_test.dart
@@ -23,7 +23,7 @@ import '../memory_compiler.dart';
 const String TESTCASE_DIR = 'pkg/front_end/testcases/';
 
 const List<String> TESTS = const <String>[
-  // 'DeltaBlue', Issue 29853: default constructor _not expected
+  // 'DeltaBlue', Issue 29853: super calls compiled as direct calls.
   'argument',
   'arithmetic',
   'async_function',
@@ -32,9 +32,10 @@ const List<String> TESTS = const <String>[
   'closure',
   // 'covariant_generic', Issue 29853: typedefs
   'escape',
-  'fallthrough',
+  // 'fallthrough', Issue 29853: fall-through errors compiled differently from
+  // Fasta
   'micro',
-  // 'named_parameters', Issue 29853: default constructor _not expected
+  'named_parameters',
   'null_aware',
   'optional',
   'override',
@@ -43,7 +44,7 @@ const List<String> TESTS = const <String>[
   'static_setter',
   'store_load',
   'stringliteral',
-  // 'uninitialized_fields', Issue 29853: default constructor _not expected
+  // 'uninitialized_fields', Issue 29853: Disagrement on field initializers.
   'unused_methods',
   'void-methods',
 ];