replace NULL->nullptr in src/remoting.

remoting/host/host_event_logger_win.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/host/host_event_logger.h"
 
 #include <windows.h>
 #include <string>
 #include <vector>
 
@@ skipping 41 matching lines @@
   HANDLE event_log_;
 
   DISALLOW_COPY_AND_ASSIGN(HostEventLoggerWin);
 };
 
 } //namespace
 
 HostEventLoggerWin::HostEventLoggerWin(base::WeakPtr<HostStatusMonitor> monitor,
                                        const std::string& application_name)
     : monitor_(monitor),
-      event_log_(NULL) {
+      event_log_(nullptr) {
   event_log_ = RegisterEventSourceW(
-      NULL, base::UTF8ToUTF16(application_name).c_str());
-  if (event_log_ != NULL) {
+      nullptr, base::UTF8ToUTF16(application_name).c_str());
+  if (event_log_ != nullptr) {
     monitor_->AddStatusObserver(this);
   } else {
     PLOG(ERROR) << "Failed to register the event source: " << application_name;
   }
 }
 
 HostEventLoggerWin::~HostEventLoggerWin() {
-  if (event_log_ != NULL) {
+  if (event_log_ != nullptr) {
     if (monitor_)
       monitor_->RemoveStatusObserver(this);
     DeregisterEventSource(event_log_);
   }
 }
 
 void HostEventLoggerWin::OnClientAuthenticated(const std::string& jid) {
   LogString(EVENTLOG_INFORMATION_TYPE, MSG_HOST_CLIENT_CONNECTED, jid);
 }
 
@@ skipping 22 matching lines @@
   // TODO(rmsousa): Fix host shutdown to actually call this, and add a log line.
 }
 
 void HostEventLoggerWin::OnStart(const std::string& xmpp_login) {
   LogString(EVENTLOG_INFORMATION_TYPE, MSG_HOST_STARTED, xmpp_login);
 }
 
 void HostEventLoggerWin::Log(WORD type,
                              DWORD event_id,
                              const std::vector<std::string>& strings) {
-  if (event_log_ == NULL)
+  if (event_log_ == nullptr)
     return;
 
   // ReportEventW() takes an array of raw string pointers. They should stay
   // valid for the duration of the call.
   std::vector<const WCHAR*> raw_strings(strings.size());
   std::vector<base::string16> utf16_strings(strings.size());
   for (size_t i = 0; i < strings.size(); ++i) {
     utf16_strings[i] = base::UTF8ToUTF16(strings[i]);
     raw_strings[i] = utf16_strings[i].c_str();
   }
 
   if (!ReportEventW(event_log_,
                     type,
                     HOST_CATEGORY,
                     event_id,
-                    NULL,
+                    nullptr,
                     static_cast<WORD>(raw_strings.size()),
                     0,
                     &raw_strings[0],
-                    NULL)) {
+                    nullptr)) {
     PLOG(ERROR) << "Failed to write an event to the event log";
   }
 }
 
 void HostEventLoggerWin::LogString(WORD type,
                                    DWORD event_id,
                                    const std::string& string) {
   std::vector<std::string> strings;
   strings.push_back(string);
   Log(type, event_id, strings);
 }
 
 // static
 scoped_ptr<HostEventLogger> HostEventLogger::Create(
     base::WeakPtr<HostStatusMonitor> monitor,
     const std::string& application_name) {
   return make_scoped_ptr(new HostEventLoggerWin(monitor, application_name));
 }
 
 }  // namespace remoting