Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

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

 // Copyright (c) 2016, 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.
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 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
 class PubSummaryManagerTest extends AbstractContextTest {
   static const String CACHE = '/home/.pub-cache/hosted/pub.dartlang.org';
 
   PubSummaryManager manager;
 
   void setUp() {
     super.setUp();
@@ skipping 1101 matching lines @@
         .singleWhere((linkedPackage) => linkedPackage.package.name == name);
   }
 
   static PackageBundle _getBundleByPackageName(
       Map<PubPackage, PackageBundle> bundles, String name) {
     PubPackage package =
         bundles.keys.singleWhere((package) => package.name == name);
     return bundles[package];
   }
 }