Move file_system libraries into 'analyzer'.

pkg/analyzer/test/file_system/test_all.dart

Index: pkg/analyzer/test/file_system/test_all.dart
diff --git a/pkg/analysis_services/test/test_all.dart b/pkg/analyzer/test/file_system/test_all.dart
similarity index 51%
copy from pkg/analysis_services/test/test_all.dart
copy to pkg/analyzer/test/file_system/test_all.dart
index fb2208646c7c3754d9f022ef6f8245c3b902cdb2..41307a9b2fa0d56e479daa680b7360e350cc1dff 100644
--- a/pkg/analysis_services/test/test_all.dart
+++ b/pkg/analyzer/test/file_system/test_all.dart
@@ -2,10 +2,19 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+library test.file_system;
+
 import 'package:unittest/unittest.dart';
 
+import 'memory_file_system_test.dart' as memory_file_system_test;
+import 'resource_uri_resolver_test.dart' as resource_uri_resolver_test;
+
+
 /// Utility for manually running all tests.
 main() {
-//  group('analysis_services', () {
-//  });
+  groupSep = ' | ';
+  group('file_system', () {
+    memory_file_system_test.main();
+    resource_uri_resolver_test.main();
+  });
 }