Moved remoting::win::MessageWindow to base::win::MessageWindow so that it could be re-used outside …

remoting/host/win/message_window.h

-// Copyright 2013 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_WIN_MESSAGE_WINDOW_H_
-#define REMOTING_HOST_WIN_MESSAGE_WINDOW_H_
-
-#include <windows.h>
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/threading/non_thread_safe.h"
-
-namespace remoting {
-namespace win {
-
-// Implements a message-only window.
-class MessageWindow : base::NonThreadSafe {
- public:
-  // Handles incoming window messages.
-  class Delegate {
-   public:
-    virtual ~Delegate() {}
-
-    virtual bool HandleMessage(HWND hwnd,
-                               UINT message,
-                               WPARAM wparam,
-                               LPARAM lparam,
-                               LRESULT* result) = 0;
-  };
-
-  MessageWindow();
-  MessageWindow(const std::string& class_name, HINSTANCE instance);
-  ~MessageWindow();
-
-  // Registers the window class and creates the window. The incoming messages
-  // will be handled by |delegate|. |delegate| must outlive |this|.
-  bool Create(Delegate* delegate);
-
-  HWND hwnd() const { return window_; }
-
- private:
-  // Invoked by the OS to process incoming window messages.
-  static LRESULT CALLBACK WindowProc(HWND hwnd, UINT message, WPARAM wparam,
-                                     LPARAM lparam);
-
-  // Atom representing the registered window class.
-  ATOM atom_;
-
-  // MessageWindow class name.
-  std::string class_name_;
-
-  // Instance of the module containing the window procedure.
-  HINSTANCE instance_;
-
-  // Handle of the input window.
-  HWND window_;
-
-  DISALLOW_COPY_AND_ASSIGN(MessageWindow);
-};
-
-}  // namespace win
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_WIN_MESSAGE_WINDOW_H_