Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

pkg/analyzer/test/source/analysis_options_provider_test.dart

Index: pkg/analyzer/test/source/analysis_options_provider_test.dart
diff --git a/pkg/analyzer/test/source/analysis_options_provider_test.dart b/pkg/analyzer/test/source/analysis_options_provider_test.dart
index 07a7ff690f135a05e0e97dbcc8728ba4a92751d0..6382564bb5c8afa8d8db6b34c969cc046d1722dc 100644
--- a/pkg/analyzer/test/source/analysis_options_provider_test.dart
+++ b/pkg/analyzer/test/source/analysis_options_provider_test.dart
@@ -10,17 +10,17 @@ import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/source/analysis_options_provider.dart';
 import 'package:analyzer/src/generated/engine.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 '../resource_utils.dart';
 import '../utils.dart';
 
 main() {
   initializeTestEnvironment();
-  runReflectiveTests(AnalysisOptionsProviderOldTest);
-  runReflectiveTests(AnalysisOptionsProviderNewTest);
+  defineReflectiveTests(AnalysisOptionsProviderOldTest);
+  defineReflectiveTests(AnalysisOptionsProviderNewTest);
   group('AnalysisOptionsProvider', () {
     void expectMergesTo(String defaults, String overrides, String expected) {
       var optionsProvider = new AnalysisOptionsProvider();