replace NULL->nullptr in src/remoting.

remoting/host/win/session_input_injector.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/win/session_input_injector.h"
 
 #include <set>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 179 matching lines @@
 }
 
 SessionInputInjectorWin::Core::~Core() {
 }
 
 void SessionInputInjectorWin::Core::SwitchToInputDesktop() {
   // Switch to the desktop receiving user input if different from the current
   // one.
   scoped_ptr<webrtc::Desktop> input_desktop(
       webrtc::Desktop::GetInputDesktop());
-  if (input_desktop.get() != NULL && !desktop_.IsSame(*input_desktop)) {
+  if (input_desktop.get() != nullptr && !desktop_.IsSame(*input_desktop)) {
     // If SetThreadDesktop() fails, the thread is still assigned a desktop.
     // So we can continue capture screen bits, just from a diffected desktop.
     desktop_.SetThreadDesktop(input_desktop.release());
   }
 }
 
 SessionInputInjectorWin::SessionInputInjectorWin(
     scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
     scoped_ptr<InputInjector> nested_executor,
     scoped_refptr<base::SingleThreadTaskRunner> inject_sas_task_runner,
@@ skipping 23 matching lines @@
     const protocol::TextEvent& event) {
   core_->InjectTextEvent(event);
 }
 
 void SessionInputInjectorWin::InjectMouseEvent(
     const protocol::MouseEvent& event) {
   core_->InjectMouseEvent(event);
 }
 
 }  // namespace remoting