Replace @ReflectiveTestCase() with @reflectiveTest.

pkg/analysis_server/test/analysis/reanalyze_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.reanalyze;
 
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:unittest/unittest.dart';
 
 import '../analysis_abstract.dart';
 import '../reflective_tests.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(ReanalyzeTest);
 }
 
 
-@ReflectiveTestCase()
+@reflectiveTest
 class ReanalyzeTest extends AbstractAnalysisTest {
   test_reanalyze() {
     createProject();
     List<AnalysisContext> contexts = server.folderMap.values.toList();
     expect(contexts, hasLength(1));
     AnalysisContext oldContext = contexts[0];
     // Reanalyze should cause a brand new context to be built.
     Request request = new Request("0", ANALYSIS_REANALYZE);
     handleSuccessfulRequest(request);
     contexts = server.folderMap.values.toList();
     expect(contexts, hasLength(1));
     AnalysisContext newContext = contexts[0];
     expect(newContext, isNot(same(oldContext)));
   }
 }