Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

pkg/analyzer/test/generated/sdk_test.dart

Index: pkg/analyzer/test/generated/sdk_test.dart
diff --git a/pkg/analyzer/test/generated/sdk_test.dart b/pkg/analyzer/test/generated/sdk_test.dart
index ab634cb957e88d7af3d30b352607c7572d1fd3d8..5e40081fa691cc8685f3b559ada983fb5268740c 100644
--- a/pkg/analyzer/test/generated/sdk_test.dart
+++ b/pkg/analyzer/test/generated/sdk_test.dart
@@ -6,17 +6,17 @@ library analyzer.test.generated.sdk_test;
 
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 
-import '../reflective_tests.dart';
 import '../src/context/mock_sdk.dart';
 import '../utils.dart';
 import 'test_support.dart';
 
 main() {
   initializeTestEnvironment();
-  runReflectiveTests(DartSdkManagerTest);
-  runReflectiveTests(SdkDescriptionTest);
+  defineReflectiveTests(DartSdkManagerTest);
+  defineReflectiveTests(SdkDescriptionTest);
 }
 
 @reflectiveTest