Avoid calling GetNamedPipeClientProcessId() which is not available on XP.

remoting/host/win/wts_session_process_launcher.cc

 // Copyright (c) 2012 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.
 //
 // This file implements the Windows service controlling Me2Me host processes
 // running within user sessions.
 
 #include "remoting/host/win/wts_session_process_launcher.h"
 
 #include <windows.h>
@@ skipping 187 matching lines @@
 }
 
 void WtsSessionProcessLauncher::DoKillProcess(DWORD exit_code) {
   DCHECK(main_message_loop_->BelongsToCurrentThread());
 
   if (worker_process_.IsValid()) {
     TerminateProcess(worker_process_, exit_code);
   }
 }
 
-void WtsSessionProcessLauncher::OnChannelConnected(DWORD peer_pid) {
+void WtsSessionProcessLauncher::OnChannelConnected() {
   DCHECK(main_message_loop_->BelongsToCurrentThread());
-
-  DWORD expected_pid = GetProcessId(worker_process_);
-  if (peer_pid != expected_pid) {
-    LOG(ERROR)
-        << "Unexpected client connected: expected=" << expected_pid
-        << ", actual=" << peer_pid;
-    Stop();
-  }
 }
 
 bool WtsSessionProcessLauncher::OnMessageReceived(const IPC::Message& message) {
   DCHECK(main_message_loop_->BelongsToCurrentThread());
 
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WtsSessionProcessLauncher, message)
       IPC_MESSAGE_HANDLER(ChromotingHostMsg_SendSasToConsole,
                           OnSendSasToConsole)
       IPC_MESSAGE_UNHANDLED(handled = false)
@@ skipping 55 matching lines @@
   if (attached_) {
     OnSessionDetached();
   }
 
   if (launcher_.get() == NULL) {
     CompleteStopping();
   }
 }
 
 } // namespace remoting