Add support for alternate window station.

sandbox/src/broker_services.cc

Index: sandbox/src/broker_services.cc
===================================================================
--- sandbox/src/broker_services.cc	(revision 16307)
+++ sandbox/src/broker_services.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -256,7 +256,8 @@
   TargetProcess* target = new TargetProcess(initial_token, lockdown_token,
                                             job, thread_pool_);
 
-  std::wstring desktop = policy_base->GetDesktop();
+  std::wstring desktop = policy_base->GetAlternateDesktop();
+
   win_result = target->Create(exe_path, command_line,
                               desktop.empty() ? NULL : desktop.c_str(),
                               &process_info);