Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/cache/add/already_cached_test.dart

Index: sdk/lib/_internal/pub_generated/test/cache/add/already_cached_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/cache/add/already_cached_test.dart b/sdk/lib/_internal/pub_generated/test/cache/add/already_cached_test.dart
index 316c38fac69bbf5812660c20f1ba96041eb50d5b..dad15dafa2cb074e28fd2c595b96f816228330d4 100644
--- a/sdk/lib/_internal/pub_generated/test/cache/add/already_cached_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/cache/add/already_cached_test.dart
@@ -1,18 +1,29 @@
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS 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.
+
 library pub_tests;
+
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
+
 main() {
   initConfig();
   integration('does nothing if the package is already cached', () {
     servePackages((builder) {
       builder.serve("foo", "1.2.3");
     });
+
+    // Run once to put it in the cache.
     schedulePub(
         args: ["cache", "add", "foo"],
         output: 'Downloading foo 1.2.3...');
+
+    // Should be in the cache now.
     schedulePub(
         args: ["cache", "add", "foo"],
         output: 'Already cached foo 1.2.3.');
+
     d.cacheDir({
       "foo": "1.2.3"
     }).validate();