Made DesktopEnvironment responsible for creation of the disconnect window.

remoting/host/disconnect_window.h

-// 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.
-
-#ifndef REMOTING_HOST_DISCONNECT_WINDOW_H_
-#define REMOTING_HOST_DISCONNECT_WINDOW_H_
-
-#include <string>
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-
-namespace remoting {
-
-struct UiStrings;
-
-class DisconnectWindow {
- public:
-  enum {
-    kMaximumConnectedNameWidthInPixels = 400
-  };
-
-  virtual ~DisconnectWindow() {}
-
-  // Shows the disconnect window, allowing the user to disconnect the session.
-  // |disconnect_callback| will be invoked on the calling UI thread when the
-  // user chooses to disconnect, or if the window is closed by any means other
-  // than Hide(), or deletion of the DisconnectWindow instance.
-  // Show returns false if the window cannot be shown, in which case the
-  // callback will not be invoked.
-  virtual bool Show(const base::Closure& disconnect_callback,
-                    const std::string& username) = 0;
-
-  // Hides the disconnect window. The disconnect callback will not be invoked.
-  virtual void Hide() = 0;
-
-  // |ui_strings| specifies localized strings to be used by the window.
-  // |ui_strings| must outlive the returned object.
-  static scoped_ptr<DisconnectWindow> Create(const UiStrings* ui_strings);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_DISCONNECT_WINDOW_H_