unittest step2: bye bye to multiple entrypoints for unittest

client/tests/client/samples/smoketest/dartWebBase_tests.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('Smoketests_main');
 
 #import('benchmarklib.dart');
 #import('dart:html');
-#import('../../../../../lib/unittest/unittest_html.dart');
+#import('../../../../../lib/unittest/unittest.dart');
+#import('../../../../../lib/unittest/html_config.dart');
 
 void main() {
+  useHtmlConfiguration();
+
   asyncTest('performanceTesting', 1, () { 
     window.setTimeout(BENCHMARK_SUITE.runBenchmarks, 0);
     window.setTimeout(testForCompletion, 0);
   });
 }
 
 testForCompletion() {
   Element element = document.query('#testResultScore');
   RegExp re = new RegExp('Score: [0-9]+');
   print(element.text);
   Expect.isTrue(re.hasMatch(element.text));
   callbackDone();
 }