Converts mash to use the common non-client frame

ash/mus/frame/move_event_handler.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 ASH_MUS_FRAME_MOVE_EVENT_HANDLER_H_
-#define ASH_MUS_FRAME_MOVE_EVENT_HANDLER_H_
-
-#include <memory>
-
-#include "ash/common/wm/wm_toplevel_window_event_handler.h"
-#include "base/macros.h"
-#include "ui/aura/window_observer.h"
-#include "ui/events/event_handler.h"
-
-namespace aura {
-class Window;
-}
-
-namespace ui {
-class CancelModeEvent;
-class Window;
-class WindowManagerClient;
-}
-
-namespace ash {
-namespace mus {
-
-class WmWindowMus;
-
-// EventHandler attached to windows that may be dragged and/or resized. This
-// forwards to WmToplevelWindowEventHandler to handle the actual drag/resize.
-class MoveEventHandler : public ui::EventHandler, public aura::WindowObserver {
- public:
-  MoveEventHandler(ui::Window* mus_window,
-                   ui::WindowManagerClient* window_manager_client,
-                   aura::Window* aura_window);
-  ~MoveEventHandler() override;
-
-  // Retrieves the MoveEventHandler for an existing WmWindow.
-  static MoveEventHandler* GetForWindow(WmWindow* wm_window);
-
-  // Attempts to start a drag if one is not already in progress. This passes
-  // the call to the underlying WmToplevelWindowEventHandler. After the drag
-  // completes, |end_closure| will be called to return whether the drag was
-  // successfully completed.
-  void AttemptToStartDrag(
-      const gfx::Point& point_in_parent,
-      int window_component,
-      aura::client::WindowMoveSource source,
-      const base::Callback<void(bool success)>& end_closure);
-
-  // Returns whether we're in a drag.
-  bool IsDragInProgress();
-
-  // Reverts a manually started drag started with AttemptToStartDrag().
-  void RevertDrag();
-
- private:
-  // Removes observer and EventHandler installed on |root_window_|.
-  void Detach();
-
-  // Overridden from ui::EventHandler:
-  void OnMouseEvent(ui::MouseEvent* event) override;
-  void OnGestureEvent(ui::GestureEvent* event) override;
-  void OnCancelMode(ui::CancelModeEvent* event) override;
-
-  // Overridden from aura::WindowObserver:
-  void OnWindowDestroying(aura::Window* window) override;
-
-  WmWindowMus* wm_window_;
-  ui::WindowManagerClient* window_manager_client_;
-  // The root window of the aura::Window supplied to the constructor.
-  // MoveEventHandler is added as a pre-target handler (and observer) of this.
-  aura::Window* root_window_;
-  wm::WmToplevelWindowEventHandler toplevel_window_event_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(MoveEventHandler);
-};
-
-}  // namespace mus
-}  // namespace ash
-
-#endif  // ASH_MUS_FRAME_MOVE_EVENT_HANDLER_H_