replace NULL->nullptr in src/remoting.

remoting/host/setup/daemon_controller.h

 // 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.
 
 #ifndef REMOTING_HOST_SETUP_DAEMON_CONTROLLER_H_
 #define REMOTING_HOST_SETUP_DAEMON_CONTROLLER_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 56 matching lines @@
     // Failed to access host directory.
     RESULT_FAILED_DIRECTORY = 3
 
     // TODO(sergeyu): Add more error codes when we know how to handle
     // them in the webapp.
   };
 
   // Callback type for GetConfig(). If the host is configured then a dictionary
   // is returned containing host_id and xmpp_login, with security-sensitive
   // fields filtered out. An empty dictionary is returned if the host is not
-  // configured, and NULL if the configuration is corrupt or cannot be read.
+  // configured, and nullptr if the configuration is corrupt or cannot be read.
   typedef base::Callback<void (scoped_ptr<base::DictionaryValue> config)>
       GetConfigCallback;
 
   // Callback used for asynchronous operations, e.g. when
   // starting/stopping the service.
   typedef base::Callback<void (AsyncResult result)> CompletionCallback;
 
   // Callback type for GetVersion().
   typedef base::Callback<void (const std::string&)> GetVersionCallback;
 
@@ skipping 180 matching lines @@
   scoped_ptr<Delegate> delegate_;
 
   std::queue<base::Closure> pending_requests_;
 
   DISALLOW_COPY_AND_ASSIGN(DaemonController);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SETUP_DAEMON_CONTROLLER_H_