Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/dart2js/source_maps_include_core_libs_in_subdirectory_test.dart

Index: sdk/lib/_internal/pub_generated/test/dart2js/source_maps_include_core_libs_in_subdirectory_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/dart2js/source_maps_include_core_libs_in_subdirectory_test.dart b/sdk/lib/_internal/pub_generated/test/dart2js/source_maps_include_core_libs_in_subdirectory_test.dart
index 7cd6e77630f37f55a82dd8585fc40871b527272e..3a040fbca7d4fcfb6f5768f73efa5aec97540977 100644
--- a/sdk/lib/_internal/pub_generated/test/dart2js/source_maps_include_core_libs_in_subdirectory_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/dart2js/source_maps_include_core_libs_in_subdirectory_test.dart
@@ -1,10 +1,21 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.file
+// 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.
+
 import 'package:path/path.dart' as path;
 import 'package:scheduled_test/scheduled_test.dart';
+
 import '../descriptor.dart' as d;
 import '../serve/utils.dart';
 import '../test_pub.dart';
+
 main() {
   initConfig();
+
+  // This test is a bit shaky. Since dart2js is free to inline things, it's
+  // not precise as to which source libraries will actually be referenced in
+  // the source map. But this tries to use a type in the core library
+  // (StringBuffer) and validate that its source ends up in the source map.
   integration(
       "Dart core libraries are available to source maps when the "
           "build directory is a subdirectory",
@@ -22,8 +33,10 @@ main() {
                             d.file(
                                 "main.dart",
                                 "main() => new StringBuffer().writeAll(['s']);")])])]).create();
+
     var webSub = path.join("web", "sub");
     pubServe(args: [webSub]);
+
     requestShouldSucceed(
         "main.dart.js.map",
         contains(r"packages/$sdk/lib/core/string_buffer.dart"),
@@ -32,6 +45,7 @@ main() {
         r"packages/$sdk/lib/core/string_buffer.dart",
         contains("class StringBuffer"),
         root: webSub);
+
     endPubServe();
   });
 }