Move mus to //services/ui

components/mus/ws/server_window_drawn_tracker_observer.h

-// Copyright 2015 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 COMPONENTS_MUS_WS_SERVER_WINDOW_DRAWN_TRACKER_OBSERVER_H_
-#define COMPONENTS_MUS_WS_SERVER_WINDOW_DRAWN_TRACKER_OBSERVER_H_
-
-namespace mus {
-
-namespace ws {
-
-class ServerWindow;
-
-class ServerWindowDrawnTrackerObserver {
- public:
-  // Invoked right before the drawn state changes. If |is_drawn| is false,
-  // |ancestor| identifies where the change will occur. In the case of a remove,
-  // |ancestor| is the parent of the window that will be removed (causing the
-  // drawn state to change). In the case of visibility change, |ancestor| is the
-  // parent of the window whose visibility will change.
-  virtual void OnDrawnStateWillChange(ServerWindow* ancestor,
-                                      ServerWindow* window,
-                                      bool is_drawn) {}
-
-  // Invoked when the drawn state changes. If |is_drawn| is false |ancestor|
-  // identifies where the change occurred. In the case of a remove |ancestor| is
-  // the parent of the window that was removed. In the case of a visibility
-  // change |ancestor| is the parent of the window whose visibility changed.
-  virtual void OnDrawnStateChanged(ServerWindow* ancestor,
-                                   ServerWindow* window,
-                                   bool is_drawn) {}
-
- protected:
-  virtual ~ServerWindowDrawnTrackerObserver() {}
-};
-
-}  // namespace ws
-
-}  // namespace mus
-
-#endif  // COMPONENTS_MUS_WS_SERVER_WINDOW_DRAWN_TRACKER_OBSERVER_H_