Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

pkg/analyzer/test/src/task/manager_test.dart

Index: pkg/analyzer/test/src/task/manager_test.dart
diff --git a/pkg/analyzer/test/src/task/manager_test.dart b/pkg/analyzer/test/src/task/manager_test.dart
index e78cba466fda63af478366ee1bc69a41432815f6..57444b3cb28d1ea5a8a5f972b6400a3cb326f56d 100644
--- a/pkg/analyzer/test/src/task/manager_test.dart
+++ b/pkg/analyzer/test/src/task/manager_test.dart
@@ -7,15 +7,15 @@ library analyzer.test.src.task.manager_test;
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/task/manager.dart';
 import 'package:analyzer/task/model.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../generated/test_support.dart';
-import '../../reflective_tests.dart';
 import '../../utils.dart';
 
 main() {
   initializeTestEnvironment();
-  runReflectiveTests(TaskManagerTest);
+  defineReflectiveTests(TaskManagerTest);
 }
 
 @reflectiveTest