Pull in test_reflective_loader 0.0.4 and switch analyzer to it.

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

Index: pkg/analyzer/test/src/summary/flat_buffers_test.dart
diff --git a/pkg/analyzer/test/src/summary/flat_buffers_test.dart b/pkg/analyzer/test/src/summary/flat_buffers_test.dart
index 40b04795e45ab61da90744f844c624fb0ce15fe6..112f2bbea783e3a135527e1ab7db452851b46f5f 100644
--- a/pkg/analyzer/test/src/summary/flat_buffers_test.dart
+++ b/pkg/analyzer/test/src/summary/flat_buffers_test.dart
@@ -7,13 +7,12 @@ library test.src.summary.flat_buffers_test;
 import 'dart:typed_data';
 
 import 'package:analyzer/src/summary/flat_buffers.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart';
 
-import '../../reflective_tests.dart';
-
 main() {
   groupSep = ' | ';
-  runReflectiveTests(BuilderTest);
+  defineReflectiveTests(BuilderTest);
 }
 
 @reflectiveTest
@@ -236,6 +235,7 @@ class BuilderTest {
         expect(items[i], trueBits.contains(i), reason: 'bit $i of $len');
       }
     }
+
     verifyListBooleans(0, <int>[]);
     verifyListBooleans(1, <int>[]);
     verifyListBooleans(1, <int>[0]);