Move NameFilter to its own file so it can be conveniently reused.

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

Index: pkg/analyzer/test/src/summary/test_all.dart
diff --git a/pkg/analyzer/test/src/summary/test_all.dart b/pkg/analyzer/test/src/summary/test_all.dart
index c2ee06324bc3e62eb30a48b6dfa7144c439400b2..252c95fb91a67c36374964cea92d18ab0e5d4ca1 100644
--- a/pkg/analyzer/test/src/summary/test_all.dart
+++ b/pkg/analyzer/test/src/summary/test_all.dart
@@ -8,7 +8,7 @@ import 'package:unittest/unittest.dart';
 
 import '../../utils.dart';
 import 'flat_buffers_test.dart' as flat_buffers_test;
-import 'prelink_test.dart' as prelink_test;
+import 'name_filter_test.dart' as name_filter_test;
 import 'resynthesize_test.dart' as resynthesize_test;
 import 'summary_sdk_test.dart' as summary_sdk_test;
 import 'summary_test.dart' as summary_test;
@@ -18,7 +18,7 @@ main() {
   initializeTestEnvironment();
   group('summary tests', () {
     flat_buffers_test.main();
-    prelink_test.main();
+    name_filter_test.main();
     resynthesize_test.main();
     summary_sdk_test.main();
     summary_test.main();