Move Options to dart:io.

tests/standalone/io/test_runner_exit_code_script.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.
 
 // Simulates a use of test_progress during a failing run of test.dart.
 
+import "dart:io";
 import "../../../tools/testing/dart/test_progress.dart";
 import "../../../tools/testing/dart/test_runner.dart";
 import "../../../tools/testing/dart/test_options.dart";
 
 main() {
   var progressType = new Options().arguments[0];
   // Build a progress indicator.
   var startTime = new DateTime.now();
   var progress =
     new ProgressIndicator.fromName(progressType, startTime, false);
@@ skipping 11 matching lines @@
 
   // Simulate the test.dart use of the progress indicator.
   progress.testAdded();
   progress.allTestsKnown();
   progress.start(testCase);
   new CommandOutput.fromCase(testCase, dummyCommand, 1, false, false, [], [],
                              new DateTime.now().difference(startTime), false);
   progress.done(testCase);
   progress.allDone();
 }