Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

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

Index: pkg/analyzer/test/src/task/yaml_test.dart
diff --git a/pkg/analyzer/test/src/task/yaml_test.dart b/pkg/analyzer/test/src/task/yaml_test.dart
index 5deb5f5e2ea7140765ab20ba74d8584237a0a8c4..34e5dc79c7ca4b98a2a939377827cc1864845094 100644
--- a/pkg/analyzer/test/src/task/yaml_test.dart
+++ b/pkg/analyzer/test/src/task/yaml_test.dart
@@ -8,16 +8,16 @@ import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/task/yaml.dart';
 import 'package:analyzer/task/general.dart';
 import 'package:analyzer/task/yaml.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 import 'package:yaml/yaml.dart';
 
-import '../../reflective_tests.dart';
 import '../../utils.dart';
 import '../context/abstract_context.dart';
 
 main() {
   initializeTestEnvironment();
-  runReflectiveTests(ParseYamlTaskTest);
+  defineReflectiveTests(ParseYamlTaskTest);
 }
 
 isInstanceOf isParseYamlTask = new isInstanceOf<ParseYamlTask>();