Adding a Confirmation dialog for It2Me on Windows

remoting/host/it2me/it2me_confirmation_dialog_chromeos.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 <memory>
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/i18n/message_formatter.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "remoting/base/string_resources.h"
 #include "remoting/host/chromeos/message_box.h"
 #include "remoting/host/it2me/it2me_confirmation_dialog.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace remoting {
 
 class It2MeConfirmationDialogChromeOS : public It2MeConfirmationDialog {
  public:
@@ skipping 39 matching lines @@
 
 void It2MeConfirmationDialogChromeOS::OnMessageBoxResult(
     MessageBox::Result result) {
   message_box_->Hide();
   base::ResetAndReturn(&callback_).Run(result == MessageBox::OK ?
                                        Result::OK : Result::CANCEL);
 }
 
 std::unique_ptr<It2MeConfirmationDialog>
 It2MeConfirmationDialogFactory::Create() {
-  return std::unique_ptr<It2MeConfirmationDialog>(
-      new It2MeConfirmationDialogChromeOS());
+  return base::MakeUnique<It2MeConfirmationDialogChromeOS>();
 }
 
 }  // namespace remoting