Extract 'DartUnitHighlightsComputer' tests into a separate file.

pkg/analysis_server/test/test_all.dart

 // Copyright (c) 2014, 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 'package:unittest/unittest.dart';
 
+import 'analysis_notification_highlights_test.dart' as analysis_notification_highlights_test;
 import 'analysis_notification_navigation_test.dart' as analysis_notification_navigation_test;
 import 'analysis_notification_outline_test.dart' as analysis_notification_outline_test;
 import 'analysis_server_test.dart' as analysis_server_test;
 import 'channel_test.dart' as channel_test;
 import 'context_directory_manager_test.dart' as context_directory_manager_test;
 import 'domain_analysis_test.dart' as domain_analysis_test;
 import 'domain_completion_test.dart' as domain_completion_test;
 import 'domain_edit_test.dart' as domain_edit_test;
 import 'domain_search_test.dart' as domain_search_test;
 import 'domain_server_test.dart' as domain_server_test;
 import 'index/test_all.dart' as index_test_all;
 import 'operation/test_all.dart' as operation_test;
 import 'package_uri_resolver_test.dart' as package_uri_resolver_test;
 import 'protocol_test.dart' as protocol_test;
 import 'resource_test.dart' as resource_test;
 import 'socket_server_test.dart' as socket_server_test;
 
 /**
  * Utility for manually running all tests.
  */
 main() {
   groupSep = ' | ';
   group('analysis_server', () {
+    analysis_notification_highlights_test.main();
     analysis_notification_navigation_test.main();
     analysis_notification_outline_test.main();
     analysis_server_test.main();
     channel_test.main();
     context_directory_manager_test.main();
     domain_analysis_test.main();
     domain_completion_test.main();
     domain_edit_test.main();
     domain_search_test.main();
     domain_server_test.main();
     index_test_all.main();
     operation_test.main();
     package_uri_resolver_test.main();
     protocol_test.main();
     resource_test.main();
     socket_server_test.main();
   });
 }