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

utils/testrunner/dart2js_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 pipeline task to run the compiler. */
 class Dart2jsTask extends RunProcessTask {
   final String _jsFileTemplate;
 
-  Dart2jsTask.checked(String dartFileTemplate, this._jsFileTemplate) {
-    init(config.dart2jsPath,
-        ['--enable_checked_mode', '--out=$_jsFileTemplate', dartFileTemplate],
-        config.timeout);
-  }
+  Dart2jsTask.checked(String dartFileTemplate, jsFileTemplate) :
+    super(config.dart2jsPath,
+        ['--enable_checked_mode', '--out=$jsFileTemplate', dartFileTemplate],
+        config.timeout),
+    _jsFileTemplate = jsFileTemplate;
 
-  Dart2jsTask(String dartFileTemplate, this._jsFileTemplate) {
-    init(config.dart2jsPath, ['--out=$_jsFileTemplate', dartFileTemplate],
-         config.timeout);
-  }
+  Dart2jsTask(String dartFileTemplate, jsFileTemplate) :
+    super(config.dart2jsPath, ['--out=$jsFileTemplate', dartFileTemplate],
+         config.timeout),
+    _jsFileTemplate = jsFileTemplate;
 
   void cleanup(Path testfile, List stdout, List stderr,
                bool logging, bool keepFiles) {
     deleteFiles([_jsFileTemplate ], testfile, logging, keepFiles, stdout);
   }
 }