Enable co19 test suite on dart test scripts.

tools/testing/dart/test_options.dart

 // Copyright (c) 2011, 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.
 
 #library("test_options_parser");
 
-List<String> defaultTestSelectors = const ['standalone', 'corelib'];
+List<String> defaultTestSelectors = const ['standalone', 'corelib', 'co19'];
 
 /**
  * Specification of a single test option.
  *
  * The name of the specification is used as the key for the option in
  * the Map returned from the [TestOptionParser] parse method.
  */
 class _TestOptionSpecification {
   _TestOptionSpecification(this.name,
                            this.description,
@@ skipping 32 matching lines @@
               ['most', 'vm', 'dartc', 'frog', 'frogsh', 'leg',
                'chromium', 'dartium', 'frogium', 'webdriver'],
               'vm'),
           new _TestOptionSpecification(
               'architecture',
               'The architecture to run tests for',
               ['-a', '--arch'],
               ['all', 'ia32', 'x64', 'simarm'],
               'ia32'),
           new _TestOptionSpecification(
-              'os',
+              'system',
               'The operating system to run tests on',
-              ['-o', '--os'],
+              ['-s', '--system'],
               ['linux', 'macos', 'windows'],
               new Platform().operatingSystem()),
           new _TestOptionSpecification(
               'checked',
               'Run tests in checked mode',
               ['--checked'],
               [],
               false,
               'bool'),
           new _TestOptionSpecification(
@@ skipping 123 matching lines @@
     if (configuration['architecture'] == 'all') {
       configuration['architecture'] = 'ia32,x64,simarm';
     }
     if (configuration['mode'] == 'all') {
       configuration['mode'] = 'debug,release';
     }
     if (configuration['component'] == 'most') {
       configuration['component'] = 'vm,dartc';
     }
 
+    // Create the artificial 'unchecked' option that test status files
+    // expect.
+    configuration['unchecked'] = !configuration['checked'];
+
     // Expand the test selectors into simple regular expressions to be
     // used on the full path of a test file. If no selectors are
     // explicitly given use the default suite patterns.
     List patterns = configuration['patterns'];
     if (patterns == null) {
       patterns = new List.from(defaultTestSelectors);
     }
     for (var i = 0; i < patterns.length; i++) {
       patterns[i] = patterns[i].replaceAll('*', '.*');
       patterns[i] = patterns[i].replaceAll('/', '.*');
@@ skipping 106 matching lines @@
       if (option.keys.some((key) => key == name)) {
         return option;
       }
     }
     return null;
   }
 
 
   List<_TestOptionSpecification> _options;
 }