Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

pkg/analyzer/test/src/summary/pub_summary_test.dart

Index: pkg/analyzer/test/src/summary/pub_summary_test.dart
diff --git a/pkg/analyzer/test/src/summary/pub_summary_test.dart b/pkg/analyzer/test/src/summary/pub_summary_test.dart
index f17df0e205c4018a0a261db9998e04c90bb8ca53..58d5f09d1810ef79171efc5c8962d49bf996fc3e 100644
--- a/pkg/analyzer/test/src/summary/pub_summary_test.dart
+++ b/pkg/analyzer/test/src/summary/pub_summary_test.dart
@@ -11,16 +11,16 @@ import 'package:analyzer/src/summary/pub_summary.dart';
 import 'package:analyzer/src/summary/summarize_elements.dart';
 import 'package:analyzer/src/util/fast_uri.dart';
 import 'package:path/path.dart' as pathos;
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart' hide ERROR;
 
-import '../../reflective_tests.dart';
 import '../../utils.dart';
 import '../context/abstract_context.dart';
 import '../context/mock_sdk.dart';
 
 main() {
   initializeTestEnvironment();
-  runReflectiveTests(PubSummaryManagerTest);
+  defineReflectiveTests(PubSummaryManagerTest);
 }
 
 @reflectiveTest