Regenerate pub sources.

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

Index: sdk/lib/_internal/pub_generated/lib/src/command/version.dart
diff --git a/sdk/lib/_internal/pub_generated/lib/src/command/version.dart b/sdk/lib/_internal/pub_generated/lib/src/command/version.dart
index 208c2f5657be22c19e4c875a2155c435be49ea50..bab6c6b9bbd69cdefd2d100207e32c11c48423cc 100644
--- a/sdk/lib/_internal/pub_generated/lib/src/command/version.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/command/version.dart
@@ -1,11 +1,20 @@
+// Copyright (c) 2012, 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.version;
+
 import 'dart:async';
+
 import '../command.dart';
 import '../log.dart' as log;
 import '../sdk.dart' as sdk;
+
+/// Handles the `version` pub command.
 class VersionCommand extends PubCommand {
   String get description => "Print pub version.";
   String get usage => "pub version";
+
   Future onRun() {
     log.message("Pub ${sdk.version}");
     return null;