Move the status file parser into its own package.

tests/standalone/io/test_runner_test.dart

 // Copyright (c) 2013, 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 "dart:io";
 import "dart:async";
+
+import "package:status_file/expectation.dart";
+
 import "../../../tools/testing/dart/command.dart";
 import "../../../tools/testing/dart/configuration.dart";
-import "../../../tools/testing/dart/expectation.dart";
 import "../../../tools/testing/dart/options.dart";
 import "../../../tools/testing/dart/test_runner.dart";
 import "../../../tools/testing/dart/test_suite.dart";
 import "../../../tools/testing/dart/test_progress.dart" as progress;
 import "../../../tools/testing/dart/utils.dart";
 import "process_test_util.dart";
 
 final DEFAULT_TIMEOUT = 20;
 final LONG_TIMEOUT = 30;
 
@@ skipping 138 matching lines @@
         break;
       case 'timeout':
         // This process should be killed by the test after DEFAULT_TIMEOUT
         new Timer(new Duration(hours: 42), () {});
         break;
       default:
         throw "Unknown option ${arguments[0]} passed to test_runner_test";
     }
   }
 }