chromeos: Move files in //ash/common to //ash, part 2

ash/common/wm/workspace/phantom_window_controller.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 ASH_COMMON_WM_WORKSPACE_PHANTOM_WINDOW_CONTROLLER_H_
-#define ASH_COMMON_WM_WORKSPACE_PHANTOM_WINDOW_CONTROLLER_H_
-
-#include <memory>
-
-#include "ash/ash_export.h"
-#include "base/macros.h"
-#include "ui/gfx/geometry/rect.h"
-
-namespace views {
-class Widget;
-}
-
-namespace ash {
-
-class WmWindow;
-
-// PhantomWindowController is responsible for showing a phantom representation
-// of a window. It's used to show a preview of how snapping or docking a window
-// will affect the window's bounds.
-class ASH_EXPORT PhantomWindowController {
- public:
-  explicit PhantomWindowController(WmWindow* window);
-
-  // Hides the phantom window without any animation.
-  ~PhantomWindowController();
-
-  // Shows the phantom window and animates shrinking it to |bounds_in_screen|.
-  void Show(const gfx::Rect& bounds_in_screen);
-
- private:
-  // Creates, shows and returns a phantom widget at |bounds|
-  // with kShellWindowId_ShelfContainer in |root_window| as a parent.
-  std::unique_ptr<views::Widget> CreatePhantomWidget(
-      WmWindow* root_window,
-      const gfx::Rect& bounds_in_screen);
-
-  // Window that the phantom window is stacked above.
-  WmWindow* window_;
-
-  // Target bounds (including the shadows if any) of the animation in screen
-  // coordinates.
-  gfx::Rect target_bounds_in_screen_;
-
-  // Phantom representation of the window.
-  std::unique_ptr<views::Widget> phantom_widget_;
-
-  DISALLOW_COPY_AND_ASSIGN(PhantomWindowController);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_WM_WORKSPACE_PHANTOM_WINDOW_CONTROLLER_H_