Moves mash/wm into ash/mus

mash/wm/bridge/mus_layout_manager_adapter.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_BRIDGE_MUS_LAYOUT_MANAGER_ADAPTER_H_
-#define MASH_WM_BRIDGE_MUS_LAYOUT_MANAGER_ADAPTER_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "components/mus/public/cpp/window_observer.h"
-
-namespace ash {
-namespace wm {
-class WmLayoutManager;
-}
-}
-
-namespace mash {
-namespace wm {
-
-// Used to associate a mus::Window with an ash::wm::WmLayoutManager. This
-// attaches an observer to the mus::Window and calls the appropriate methods on
-// the WmLayoutManager at the appropriate time.
-//
-// NOTE: WmLayoutManager provides the function SetChildBounds(). This is
-// expected to be called to change the bounds of the Window. For aura this
-// function is called by way of aura exposing a hook (aura::LayoutManager). Mus
-// has no such hook. To ensure SetChildBounds() is called correctly all bounds
-// changes to mus::Windows must be routed through WmWindowMus. WmWindowMus
-// ensures WmLayoutManager::SetChildBounds() is called appropriately.
-class MusLayoutManagerAdapter : public mus::WindowObserver {
- public:
-  MusLayoutManagerAdapter(
-      mus::Window* window,
-      std::unique_ptr<ash::wm::WmLayoutManager> layout_manager);
-  ~MusLayoutManagerAdapter() override;
-
-  ash::wm::WmLayoutManager* layout_manager() { return layout_manager_.get(); }
-
- private:
-  // WindowObserver attached to child windows. A separate class is used to
-  // easily differentiate WindowObserver calls on the mus::Window associated
-  // with the MusLayoutManagerAdapter, vs children.
-  class ChildWindowObserver : public mus::WindowObserver {
-   public:
-    explicit ChildWindowObserver(MusLayoutManagerAdapter* adapter);
-    ~ChildWindowObserver() override;
-
-   private:
-    // mus::WindowObserver:
-    void OnWindowVisibilityChanged(mus::Window* window) override;
-
-    MusLayoutManagerAdapter* adapter_;
-
-    DISALLOW_COPY_AND_ASSIGN(ChildWindowObserver);
-  };
-
-  // mus::WindowObserver:
-  void OnTreeChanging(const TreeChangeParams& params) override;
-  void OnTreeChanged(const TreeChangeParams& params) override;
-  void OnWindowBoundsChanged(mus::Window* window,
-                             const gfx::Rect& old_bounds,
-                             const gfx::Rect& new_bounds) override;
-
-  mus::Window* window_;
-  ChildWindowObserver child_window_observer_;
-  std::unique_ptr<ash::wm::WmLayoutManager> layout_manager_;
-
-  DISALLOW_COPY_AND_ASSIGN(MusLayoutManagerAdapter);
-};
-
-}  // namespace wm
-}  // namespace mash
-
-#endif  // MASH_WM_BRIDGE_MUS_LAYOUT_MANAGER_ADAPTER_H_