replace NULL->nullptr in src/remoting.

remoting/host/win/host_service.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/host_service.h"
 
 #include <sddl.h>
@@ skipping 202 matching lines @@
 
   daemon_process_ = DaemonProcess::Create(
       task_runner,
       io_task_runner,
       base::Bind(&HostService::StopDaemonProcess, weak_ptr_));
 }
 
 int HostService::RunAsService() {
   SERVICE_TABLE_ENTRYW dispatch_table[] = {
     { const_cast<LPWSTR>(kWindowsServiceName), &HostService::ServiceMain },
-    { NULL, NULL }
+    { nullptr, nullptr }
   };
 
   if (!StartServiceCtrlDispatcherW(dispatch_table)) {
     PLOG(ERROR) << "Failed to connect to the service control manager";
     return kInitializationFailed;
   }
 
   // Wait until the service thread completely exited to avoid concurrent
   // teardown of objects registered with base::AtExitManager and object
   // destoyed by the service thread.
@@ skipping 200 matching lines @@
 int DaemonProcessMain() {
   HostService* service = HostService::GetInstance();
   if (!service->InitWithCommandLine(base::CommandLine::ForCurrentProcess())) {
     return kUsageExitCode;
   }
 
   return service->Run();
 }
 
 }  // namespace remoting