Update checked-in binary to 0.6.21.3_r26639 (M6)

dart/tools/test.dart

 #!/usr/bin/env 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.
 
 /**
  * This file is the entrypoint of the dart test suite.  This suite is used
  * to test:
  *
  *     1. the dart vm
@@ skipping 249 matching lines @@
 
 Future deleteTemporaryDartDirectories() {
   var completer = new Completer();
   var environment = Platform.environment;
   if (environment['DART_TESTING_DELETE_TEMPORARY_DIRECTORIES'] == '1') {
     Directory getTempDir() {
       // dir will be located in the system temporary directory.
       var dir = new Directory('').createTempSync();
       var path = new Path(dir.path).directoryPath;
       dir.deleteSync();
-      return new Directory.fromPath(path);
+      return new Directory(path.toNativePath());
     }
 
     // These are the patterns of temporary directory names created by
     // 'Directory.createTempSync()' on linux/macos and windows.
     var regExp;
     if (['macos', 'linux'].contains(Platform.operatingSystem)) {
       regExp = new RegExp(r'^temp_dir1_......$');
     } else {
       regExp = new RegExp(r'tempdir-........-....-....-....-............$');
     }
@@ skipping 18 matching lines @@
 void main() {
   deleteTemporaryDartDirectories().then((_) {
     var optionsParser = new TestOptionsParser();
     var configurations = optionsParser.parse(new Options().arguments);
     if (configurations != null && configurations.length > 0) {
       testConfigurations(configurations);
     }
   });
 }