Delete the ViewManager and WindowManager services.

services/view_manager/server_view_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 SERVICES_VIEW_MANAGER_SERVER_VIEW_DRAWN_TRACKER_OBSERVER_H_
-#define SERVICES_VIEW_MANAGER_SERVER_VIEW_DRAWN_TRACKER_OBSERVER_H_
-
-namespace view_manager {
-
-class ServerView;
-
-class ServerViewDrawnTrackerObserver {
- public:
-  // 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 view that was removed. In the case of a visibility change
-  // |ancestor| is the parent of the view whose visibility changed.
-  virtual void OnDrawnStateChanged(ServerView* ancestor,
-                                   ServerView* view,
-                                   bool is_drawn) {}
-
- protected:
-  virtual ~ServerViewDrawnTrackerObserver() {}
-};
-
-}  // namespace view_manager
-
-#endif  // SERVICES_VIEW_MANAGER_SERVER_VIEW_DRAWN_TRACKER_OBSERVER_H_