improve fasta export directive recovery

pkg/analyzer/test/generated/parser_fasta_listener.dart

Index: pkg/analyzer/test/generated/parser_fasta_listener.dart
diff --git a/pkg/analyzer/test/generated/parser_fasta_listener.dart b/pkg/analyzer/test/generated/parser_fasta_listener.dart
index 75741f22979d4eac11966341b4c552d58c8de76c..d14da641a808acf1f6d73ea32aa12d0ba49d753b 100644
--- a/pkg/analyzer/test/generated/parser_fasta_listener.dart
+++ b/pkg/analyzer/test/generated/parser_fasta_listener.dart
@@ -6,6 +6,7 @@ import 'package:front_end/src/fasta/fasta_codes.dart';
 import 'package:front_end/src/fasta/parser/identifier_context.dart'
     show IdentifierContext;
 import 'package:front_end/src/fasta/parser.dart' as fasta;
+import 'package:front_end/src/fasta/parser/token_stream_rewriter.dart';
 import 'package:front_end/src/fasta/scanner/token.dart' as fasta;
 import 'package:front_end/src/fasta/util/link.dart';
 import 'package:front_end/src/scanner/token.dart';
@@ -58,6 +59,20 @@ class ForwardingTestListener implements fasta.Listener {
 
   ForwardingTestListener(this.listener);
 
+  @override
+  Token get firstToken => listener.firstToken;
+
+  @override
+  set firstToken(Token token) {
+    listener.firstToken = token;
+  }
+
+  @override
+  TokenStreamRewriter get rewriter => listener.rewriter;
+
+  @override
+  Uri get uri => listener.uri;
+
   @override
   void beginArguments(Token token) {
     listener.beginArguments(token);
@@ -1542,8 +1557,4 @@ class ForwardingTestListener implements fasta.Listener {
     listener.suppressParseErrors = value;
     // TODO(danrubel): implement suppressParseErrors
   }
-
-  // TODO(danrubel): implement uri
-  @override
-  Uri get uri => listener.uri;
 }