Use package:test_reflective_loader instead of reflective_tests.

pkg/analysis_server/test/analysis/get_errors_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.get_errors;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analyzer/file_system/file_system.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 
 import '../analysis_abstract.dart';
-import '../reflective_tests.dart';
 
 main() {
   groupSep = ' | ';
-  runReflectiveTests(GetErrorsTest);
+  defineReflectiveTests(GetErrorsTest);
 }
 
 @reflectiveTest
 class GetErrorsTest extends AbstractAnalysisTest {
   static const String requestId = 'test-getError';
 
   @override
   void setUp() {
     super.setUp();
     server.handlers = [new AnalysisDomainHandler(server),];
@@ skipping 90 matching lines @@
     return new AnalysisGetErrorsParams(testFile).toRequest(requestId);
   }
 
   Future<List<AnalysisError>> _getErrors(String file) {
     Request request = _createGetErrorsRequest();
     return serverChannel.sendRequest(request).then((Response response) {
       return new AnalysisGetErrorsResult.fromResponse(response).errors;
     });
   }
 }