Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

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

Index: pkg/analyzer/test/src/task/options_test.dart
diff --git a/pkg/analyzer/test/src/task/options_test.dart b/pkg/analyzer/test/src/task/options_test.dart
index a0cbca824f8eeb959087167b8192c04ea3c27cf6..4b2e2a915830866bfdea4b3b21628979ed1f85d4 100644
--- a/pkg/analyzer/test/src/task/options_test.dart
+++ b/pkg/analyzer/test/src/task/options_test.dart
@@ -13,20 +13,20 @@ import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/task/options.dart';
 import 'package:analyzer/task/general.dart';
 import 'package:analyzer/task/model.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 import 'package:yaml/yaml.dart';
 
 import '../../generated/test_support.dart';
-import '../../reflective_tests.dart';
 import '../../utils.dart';
 import '../context/abstract_context.dart';
 
 main() {
   initializeTestEnvironment();
-  runReflectiveTests(ContextConfigurationTest);
-  runReflectiveTests(GenerateNewOptionsErrorsTaskTest);
-  runReflectiveTests(GenerateOldOptionsErrorsTaskTest);
-  runReflectiveTests(OptionsFileValidatorTest);
+  defineReflectiveTests(ContextConfigurationTest);
+  defineReflectiveTests(GenerateNewOptionsErrorsTaskTest);
+  defineReflectiveTests(GenerateOldOptionsErrorsTaskTest);
+  defineReflectiveTests(OptionsFileValidatorTest);
 }
 
 isInstanceOf isGenerateOptionsErrorsTask =