Make browser "sometest" like a regular test run by test.dart/py instead of

tools/testing/perf_testing/smoketest/Smoketest.dart

-// Copyright (c) 2011, 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.
-
-#library('Smoketest_lib');
-
-#import("benchmarklib.dart");
-#import("dart:html");
-
-/** 
- * This is a sample no-op benchmark to ensure that frog has not dramatically
- * broken Firefox.
- */
-class Smoketest extends BenchmarkBase {
-
-  const Smoketest() : super("Smoketest");
-
-  void run() {}
-
-  static void main() {
-    new Smoketest().report();
-  }
-
-  static void log(String str) {
-    window.console.log(str);
-  }
-}