Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/cache/repair/empty_cache_test.dart

Index: sdk/lib/_internal/pub_generated/test/cache/repair/empty_cache_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/cache/repair/empty_cache_test.dart b/sdk/lib/_internal/pub_generated/test/cache/repair/empty_cache_test.dart
index e078722d6e68a66c4e3f881c55df3c88ca949def..3588ea1e82412341bc50ceb6ee1658228031ba96 100644
--- a/sdk/lib/_internal/pub_generated/test/cache/repair/empty_cache_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/cache/repair/empty_cache_test.dart
@@ -1,8 +1,15 @@
+// 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 '../../test_pub.dart';
+
 main() {
   initConfig();
   integration('does nothing if the cache is empty', () {
+    // Repair them.
     schedulePub(
         args: ["cache", "repair"],
         output: "No packages in cache, so nothing to repair.");