Add closeBraceTokenFor and use it instead of BeginToken.

pkg/front_end/lib/src/fasta/source/stack_listener.dart

Index: pkg/front_end/lib/src/fasta/source/stack_listener.dart
diff --git a/pkg/front_end/lib/src/fasta/source/stack_listener.dart b/pkg/front_end/lib/src/fasta/source/stack_listener.dart
index c34a4b2d77ce0f2ae0a89151f294f7e9b7d7e46c..a64357375bc215ebe73bd265f041ca0c668a18fc 100644
--- a/pkg/front_end/lib/src/fasta/source/stack_listener.dart
+++ b/pkg/front_end/lib/src/fasta/source/stack_listener.dart
@@ -6,8 +6,6 @@ library fasta.stack_listener;
 
 import 'package:kernel/ast.dart' show AsyncMarker, Expression;
 
-import '../../scanner/token.dart' show BeginToken;
-
 import '../deprecated_problems.dart' show deprecated_inputError;
 
 import '../fasta_codes.dart' show Message, templateInternalProblemStackNotEmpty;
@@ -212,7 +210,7 @@ abstract class StackListener extends Listener {
   }
 
   @override
-  void handleParenthesizedExpression(BeginToken token) {
+  void handleParenthesizedExpression(Token token) {
     debugEvent("ParenthesizedExpression");
   }