Reorganize some pub libraries.

sdk/lib/_internal/pub/lib/src/command_update.dart

Index: sdk/lib/_internal/pub/lib/src/command_update.dart
diff --git a/sdk/lib/_internal/pub/lib/src/command_update.dart b/sdk/lib/_internal/pub/lib/src/command_update.dart
deleted file mode 100644
index 3db7ba848953140873953c5ed8a5a1bbbe5e40be..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/lib/src/command_update.dart
+++ /dev/null
@@ -1,45 +0,0 @@
-// 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 command_update;
-
-import 'dart:async';
-
-import 'package:args/args.dart';
-
-import 'command.dart';
-import 'entrypoint.dart';
-import 'log.dart' as log;
-
-/// Handles the `update` pub command.
-class UpdateCommand extends PubCommand {
-  String get description =>
-    "Update the current package's dependencies to the latest versions.";
-
-  String get usage => 'pub update [dependencies...]';
-
-  bool get isOffline => commandOptions['offline'];
-
-  UpdateCommand() {
-    commandParser.addFlag('offline',
-        help: 'Use cached packages instead of accessing the network.');
-  }
-
-  Future onRun() {
-    var future;
-    if (commandOptions.rest.isEmpty) {
-      future = entrypoint.updateAllDependencies();
-    } else {
-      future = entrypoint.updateDependencies(commandOptions.rest);
-    }
-
-    return future.then((_) {
-      log.message("Dependencies updated!");
-      if (isOffline) {
-        log.warning("Warning: Updating when offline may not update you to the "
-                    "latest versions of your dependencies.");
-      }
-    });
-  }
-}