Setting up benchmarks and perf utilities

test/perf/input/start_dart.js

Index: test/perf/input/start_dart.js
diff --git a/bin/dwc.dart b/test/perf/input/start_dart.js
old mode 100755
new mode 100644
similarity index 70%
copy from bin/dwc.dart
copy to test/perf/input/start_dart.js
index 2c122bda0e285a2a0c82c3adf22b47200e4a16a7..0b7ee837b16d6c3bf8661acb6ee3e8f35c468fd5
--- a/bin/dwc.dart
+++ b/test/perf/input/start_dart.js
@@ -1,8 +1,7 @@
-#!/usr/bin/env dart
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:web_ui/dwc.dart' as dwc;
-
-void main() => dwc.main();
+if (navigator.webkitStartDart) {
+  navigator.webkitStartDart();
+}