merge fasta.Token into analyzer.Token

pkg/front_end/lib/src/fasta/parser/token_stream_rewriter.dart

Index: pkg/front_end/lib/src/fasta/parser/token_stream_rewriter.dart
diff --git a/pkg/front_end/lib/src/fasta/parser/token_stream_rewriter.dart b/pkg/front_end/lib/src/fasta/parser/token_stream_rewriter.dart
index a6dfa523f315878324e35319ee50fd701fce2b3a..21cd030bfb63c0dba16f551bf533f3e45390e7a1 100644
--- a/pkg/front_end/lib/src/fasta/parser/token_stream_rewriter.dart
+++ b/pkg/front_end/lib/src/fasta/parser/token_stream_rewriter.dart
@@ -4,6 +4,7 @@
 
 import 'package:front_end/src/fasta/errors.dart';
 import 'package:front_end/src/fasta/scanner/token.dart';
+import 'package:front_end/src/scanner/token.dart' show Token;
 
 /// Provides the capability of inserting tokens into a token stream by rewriting
 /// the previous token to point to the inserted token.