Move scope.dart.

pkg/front_end/tool/fasta_perf.dart

Index: pkg/front_end/tool/fasta_perf.dart
diff --git a/pkg/front_end/tool/fasta_perf.dart b/pkg/front_end/tool/fasta_perf.dart
index f5bf9385bd8c5b98058137048a81b21bc8f081dc..e00aa501a331d9439de4e034e6aad63365376b6b 100644
--- a/pkg/front_end/tool/fasta_perf.dart
+++ b/pkg/front_end/tool/fasta_perf.dart
@@ -15,7 +15,7 @@ import 'package:front_end/src/fasta/kernel/kernel_target.dart'
 import 'package:front_end/src/fasta/parser.dart';
 import 'package:front_end/src/fasta/scanner.dart';
 import 'package:front_end/src/fasta/scanner/io.dart' show readBytesFromFileSync;
-import 'package:front_end/src/fasta/source/scope_listener.dart' show Scope;
+import 'package:front_end/src/fasta/scope.dart' show Scope;
 import 'package:front_end/src/fasta/ticker.dart' show Ticker;
 import 'package:front_end/src/fasta/translate_uri.dart' show TranslateUri;
 import 'package:front_end/src/fasta/translate_uri.dart';