Switch 'analyzer' to 'package:test' and test_reflective_loader ^0.1.0.

pkg/analyzer/test/instrumentation/test_all.dart

Index: pkg/analyzer/test/instrumentation/test_all.dart
diff --git a/pkg/analyzer/test/instrumentation/test_all.dart b/pkg/analyzer/test/instrumentation/test_all.dart
index 46bb206436be2740d528378973b26b0f46ad9da6..8ef3a566c172b3ed039fc0c1bdb44c565797feee 100644
--- a/pkg/analyzer/test/instrumentation/test_all.dart
+++ b/pkg/analyzer/test/instrumentation/test_all.dart
@@ -4,14 +4,13 @@
 
 library analyzer.test.instrumentation.test_all;
 
-import 'package:unittest/unittest.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'instrumentation_test.dart' as instrumentation_test;
 
 /// Utility for manually running all tests.
 main() {
-  groupSep = ' | ';
-  group('instrumentation', () {
+  defineReflectiveSuite(() {
     instrumentation_test.main();
-  });
+  }, name: 'instrumentation');
 }