Moves mash/wm into ash/mus

mash/wm/disconnected_app_handler.h

-// Copyright 2016 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 MASH_WM_DISCONNECTED_APP_HANDLER_H_
-#define MASH_WM_DISCONNECTED_APP_HANDLER_H_
-
-#include "base/macros.h"
-#include "components/mus/public/cpp/window_tracker.h"
-
-namespace mash {
-namespace wm {
-
-// Tracks mus::Windows for when they get disconnected from the embedded app.
-// Currently closes a window upon disconnection.
-class DisconnectedAppHandler : public mus::WindowTracker {
- public:
-  DisconnectedAppHandler();
-  ~DisconnectedAppHandler() override;
-
- private:
-  // mus::WindowObserver:
-  void OnWindowEmbeddedAppDisconnected(mus::Window* window) override;
-
-  DISALLOW_COPY_AND_ASSIGN(DisconnectedAppHandler);
-};
-
-}  // namespace wm
-}  // namespace mash
-
-#endif  // MASH_WM_DISCONNECTED_APP_HANDLER_H_