Small fix to perf.dart.

pkg/front_end/tool/perf_test.dart

Index: pkg/front_end/tool/perf_test.dart
diff --git a/pkg/front_end/tool/perf_test.dart b/pkg/front_end/tool/perf_test.dart
index 66093eddeeb4f19b30a0f1c1a9026e7f6233d58e..2d265fd9ddbafdde6b0e9646d8c37ea8cf61d5b4 100644
--- a/pkg/front_end/tool/perf_test.dart
+++ b/pkg/front_end/tool/perf_test.dart
@@ -6,6 +6,19 @@
 /// the code here just has a dummy import to the rest of the code.
 library front_end.tool.perf_test;
 
+import 'dart:io' show Platform;
 import 'perf.dart' as m;
 
-main() => print('done ${m.inputSize}');
+main() async {
+  var benchIds = [
+    'scan',
+    'parse',
+    'kernel_gen_e2e',
+    'kernel_gen_e2e_sum',
+    'linked_summarize'
+  ];
+  var inputFile = Platform.script.resolve('../lib/file_system.dart').path;
+  for (var id in benchIds) {
+    await m.main([id, inputFile]);
+  }
+}