Added support for running an HTTP server during the test and being able to serve up static files. L…

utils/testrunner/delete_task.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.
 
 /** A simple pipeline task to delete a file. */
 class DeleteTask extends PipelineTask {
   final String _filenameTemplate;
 
   DeleteTask(this._filenameTemplate);
 
-  void execute(Path testfile, List stdout, List stderr, bool logging,
+  execute(Path testfile, List stdout, List stderr, bool logging,
               Function exitHandler) {
     var fname = expandMacros(_filenameTemplate, testfile);
     deleteFile(fname);
     if (logging) {
       stdout.add('Removing $fname');
     }
     exitHandler(0);
   }
 }