Fix logical error in r36299

tools/testing/dart/drt_updater.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.
 
 // TODO(antonm): rename to something like test_runner_updater.
 
 library drt_updater;
 
 import "dart:async";
 import "dart:io";
@@ skipping 22 matching lines @@
       _updatingProcess.then(_onUpdatedHandler).catchError((e) {
         print("Error starting $script process: $e");
         // TODO(floitsch): should we print the stacktrace?
         return false;
       });
     }
   }
 
   List<String> get _getUpdateCommand {
     Uri updateScript = TestUtils.dartDirUri.resolve(script);
-    List<String> command = [updateScriptPath.toFilePath()];
+    List<String> command = [updateScript.toFilePath()];
     if (null != option) {
       command.add(option);
     }
     return command;
   }
 
   void _onUpdatedHandler(ProcessResult result) {
     if (result.exitCode == 0) {
       print('$name updated');
     } else {
@@ skipping 25 matching lines @@
     if (_dartiumUpdater == null) {
       _dartiumUpdater = new _DartiumUpdater('Dartium Chrome',
                                             'tools/get_archive.py',
                                             'dartium');
     }
     return _dartiumUpdater;
   } else {
     return null;
   }
 }