It is time.

ui/wm/public/window_move_client.h

-// Copyright (c) 2012 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 UI_WM_PUBLIC_WINDOW_MOVE_CLIENT_H_
-#define UI_WM_PUBLIC_WINDOW_MOVE_CLIENT_H_
-
-#include "ui/aura/aura_export.h"
-#include "ui/gfx/vector2d.h"
-
-namespace gfx {
-class Point;
-}
-
-namespace aura {
-class Window;
-namespace client {
-
-enum WindowMoveResult {
-  MOVE_SUCCESSFUL,  // Moving window was successful.
-  MOVE_CANCELED    // Moving window was canceled.
-};
-
-enum WindowMoveSource {
-  WINDOW_MOVE_SOURCE_MOUSE,
-  WINDOW_MOVE_SOURCE_TOUCH,
-};
-
-// An interface implemented by an object that manages programatically keyed
-// window moving.
-class AURA_EXPORT WindowMoveClient {
- public:
-  // Starts a nested message loop for moving the window. |drag_offset| is the
-  // offset from the window origin to the cursor when the drag was started.
-  // Returns MOVE_SUCCESSFUL if the move has completed successfully, or
-  // MOVE_CANCELED otherwise.
-  virtual WindowMoveResult RunMoveLoop(Window* window,
-                                       const gfx::Vector2d& drag_offset,
-                                       WindowMoveSource source) = 0;
-
-  // Ends a previously started move loop.
-  virtual void EndMoveLoop() = 0;
-
- protected:
-  virtual ~WindowMoveClient() {}
-};
-
-// Sets/Gets the activation client for the specified window.
-AURA_EXPORT void SetWindowMoveClient(Window* window,
-                                     WindowMoveClient* client);
-AURA_EXPORT WindowMoveClient* GetWindowMoveClient(Window* window);
-
-}  // namespace client
-}  // namespace aura
-
-#endif  // UI_WM_PUBLIC_WINDOW_MOVE_CLIENT_H_