Revert of Remote assistance on Chrome OS Part V - It2MeHost Continue Window

remoting/host/chromeos/message_box.h

-// 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.
-
-#ifndef REMOTING_HOST_CHROMEOS_MESSAGE_BOX_H_
-#define REMOTING_HOST_CHROMEOS_MESSAGE_BOX_H_
-
-#include "base/callback_helpers.h"
-#include "base/strings/string16.h"
-#include "base/threading/thread_checker.h"
-
-namespace remoting {
-
-// Overview:
-// Shows a system modal message box with OK and cancel buttons. This class
-// is not thread-safe, it must be called on the UI thread of the browser
-// process.
-class MessageBox {
- public:
-  enum Result {
-    OK,
-    CANCEL
-  };
-
-  // ResultCallback will be invoked with Result::Cancel if the user closes the
-  // MessageBox without clicking on any buttons.
-  typedef base::Callback<void(Result)> ResultCallback;
-
-  MessageBox(const base::string16& title_label,
-             const base::string16& message_label,
-             const base::string16& ok_label,
-             const base::string16& cancel_label,
-             ResultCallback result_callback);
-  ~MessageBox();
-
-  void Show();
-  void Hide();
-
- private:
-  class Core;
-  Core* core_;
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(MessageBox);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_CHROMEOS_MESSAGE_BOX_H_