Store the async-await compiled pub code directly in the repo.

sdk/lib/_internal/pub_generated/lib/src/command/cache.dart

Index: sdk/lib/_internal/pub_generated/lib/src/command/cache.dart
diff --git a/sdk/lib/_internal/pub/lib/src/command/cache.dart b/sdk/lib/_internal/pub_generated/lib/src/command/cache.dart
similarity index 65%
copy from sdk/lib/_internal/pub/lib/src/command/cache.dart
copy to sdk/lib/_internal/pub_generated/lib/src/command/cache.dart
index f0559b763437a25d9c6d8e75dee0a5d7cdaf3808..aba582a480c523159ef29412b1d5a5e6cbf554fb 100644
--- a/sdk/lib/_internal/pub/lib/src/command/cache.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/command/cache.dart
@@ -1,20 +1,12 @@
-// Copyright (c) 2013, 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.command.cache;
-
 import '../command.dart';
 import 'cache_add.dart';
 import 'cache_list.dart';
 import 'cache_repair.dart';
-
-/// Handles the `cache` pub command.
 class CacheCommand extends PubCommand {
   String get description => "Work with the system cache.";
   String get usage => "pub cache <subcommand>";
   String get docUrl => "http://dartlang.org/tools/pub/cmd/pub-cache.html";
-
   final subcommands = {
     "add": new CacheAddCommand(),
     "list": new CacheListCommand(),