replace NULL->nullptr in src/remoting.

remoting/protocol/channel_dispatcher_base.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.
 
 #include "remoting/protocol/channel_dispatcher_base.h"
 
 #include "base/bind.h"
 #include "net/socket/stream_socket.h"
 #include "remoting/protocol/session.h"
 #include "remoting/protocol/session_config.h"
 #include "remoting/protocol/stream_channel_factory.h"
 
 namespace remoting {
 namespace protocol {
 
 ChannelDispatcherBase::ChannelDispatcherBase(const char* channel_name)
     : channel_name_(channel_name),
-      channel_factory_(NULL) {
+      channel_factory_(nullptr) {
 }
 
 ChannelDispatcherBase::~ChannelDispatcherBase() {
   if (channel_factory_)
     channel_factory_->CancelChannelCreation(channel_name_);
 }
 
 void ChannelDispatcherBase::Init(Session* session,
                                  const ChannelConfig& config,
                                  const InitializedCallback& callback) {
@@ skipping 19 matching lines @@
       &ChannelDispatcherBase::OnChannelReady, base::Unretained(this)));
 }
 
 void ChannelDispatcherBase::OnChannelReady(
     scoped_ptr<net::StreamSocket> socket) {
   if (!socket.get()) {
     initialized_callback_.Run(false);
     return;
   }
 
-  channel_factory_ = NULL;
+  channel_factory_ = nullptr;
   channel_ = socket.Pass();
 
   OnInitialized();
 
   initialized_callback_.Run(true);
 }
 
 }  // namespace protocol
 }  // namespace remoting