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

tools/testing/perf_testing/smoketest/dartWebBase.dart

Index: tools/testing/perf_testing/smoketest/dartWebBase.dart
===================================================================
--- tools/testing/perf_testing/smoketest/dartWebBase.dart	(revision 3211)
+++ tools/testing/perf_testing/smoketest/dartWebBase.dart	(working copy)
@@ -1,11 +0,0 @@
-// 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.
-
-#import('benchmarklib.dart');
-
-#import('dart:html');
-
-void main() {
-  window.on.contentLoaded.add((Event e) => BENCHMARK_SUITE.runBenchmarks());
-}