replace NULL->nullptr in src/remoting.

remoting/protocol/fake_stream_socket.cc

 // Copyright 2014 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/fake_stream_socket.h"
 
 #include "base/bind.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "net/base/address_list.h"
@@ skipping 25 matching lines @@
   EXPECT_TRUE(task_runner_->BelongsToCurrentThread());
   input_data_.insert(input_data_.end(), data.begin(), data.end());
   // Complete pending read if any.
   if (!read_callback_.is_null()) {
     int result = std::min(read_buffer_size_,
                           static_cast<int>(input_data_.size() - input_pos_));
     EXPECT_GT(result, 0);
     memcpy(read_buffer_->data(),
            &(*input_data_.begin()) + input_pos_, result);
     input_pos_ += result;
-    read_buffer_ = NULL;
+    read_buffer_ = nullptr;
 
     net::CompletionCallback callback = read_callback_;
     read_callback_.Reset();
     callback.Run(result);
   }
 }
 
 void FakeStreamSocket::PairWith(FakeStreamSocket* peer_socket) {
   EXPECT_TRUE(task_runner_->BelongsToCurrentThread());
   peer_socket_ = peer_socket->GetWeakPtr();
@@ skipping 211 matching lines @@
   if (channels_.find(name) != channels_.end())
     callback.Run(owned_channel.Pass());
 }
 
 void FakeStreamChannelFactory::CancelChannelCreation(const std::string& name) {
   channels_.erase(name);
 }
 
 }  // namespace protocol
 }  // namespace remoting