Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

pkg/analyzer/test/instrumentation/instrumentation_test.dart

Index: pkg/analyzer/test/instrumentation/instrumentation_test.dart
diff --git a/pkg/analyzer/test/instrumentation/instrumentation_test.dart b/pkg/analyzer/test/instrumentation/instrumentation_test.dart
index a938d4dfcee1f8b52711891f353454ade7484c0d..8386ee70f4f3a3c6463e2aa0e55277a8683f1927 100644
--- a/pkg/analyzer/test/instrumentation/instrumentation_test.dart
+++ b/pkg/analyzer/test/instrumentation/instrumentation_test.dart
@@ -7,14 +7,13 @@ library analyzer.test.instrumentation.instrumentation_test;
 import 'dart:async';
 
 import 'package:analyzer/instrumentation/instrumentation.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 
-import '../reflective_tests.dart';
-
 main() {
   group('instrumentation', () {
-    runReflectiveTests(InstrumentationServiceTest);
-    runReflectiveTests(MulticastInstrumentationServerTest);
+    defineReflectiveTests(InstrumentationServiceTest);
+    defineReflectiveTests(MulticastInstrumentationServerTest);
   });
 }