Replace @ReflectiveTestCase() with @reflectiveTest.

pkg/analysis_server/test/analysis/notification_navigation_test.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.
 
 library test.analysis.notification.navigation;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:unittest/unittest.dart';
 
 import '../analysis_abstract.dart';
 import '../reflective_tests.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(AnalysisNotificationNavigationTest);
 }
 
 
-@ReflectiveTestCase()
+@reflectiveTest
 class AnalysisNotificationNavigationTest extends AbstractAnalysisTest {
   List<NavigationRegion> regions;
   List<NavigationTarget> targets;
   List<String> targetFiles;
 
   NavigationRegion testRegion;
   List<int> testTargetIndexes;
   NavigationTarget testTarget;
 
   /**
@@ skipping 574 matching lines @@
   test_type_void() {
     addTestFile('''
 void main() {
 }
 ''');
     return prepareNavigation().then((_) {
       assertNoRegionAt('void');
     });
   }
 }