Replace @ReflectiveTestCase() with @reflectiveTest.

pkg/analysis_server/test/integration/analysis/highlights_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.integration.analysis.highlights;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../reflective_tests.dart';
 import '../integration_tests.dart';
 
 main() {
   runReflectiveTests(AnalysisHighlightsTest);
 }
 
-@ReflectiveTestCase()
+@reflectiveTest
 class AnalysisHighlightsTest extends AbstractAnalysisServerIntegrationTest {
   test_highlights() {
     String pathname = sourcePath('test.dart');
     String text = r'''
 import 'dart:async' as async;
 
 /**
  * Doc comment
  */
 class Class<TypeParameter> {
@@ skipping 113 matching lines @@
       check(HighlightRegionType.SETTER_DECLARATION, ['setter']);
       check(
           HighlightRegionType.TOP_LEVEL_VARIABLE,
           ['override', 'topLevelVariable']);
       check(HighlightRegionType.TYPE_NAME_DYNAMIC, ['dynamic']);
       check(HighlightRegionType.TYPE_PARAMETER, ['TypeParameter']);
       expect(highlights, isEmpty);
     });
   }
 }