Shelf Cleanup AlternateShelfLayout P1 Attempt 3

ash/shelf/alternate_app_list_button.h

-// Copyright 2014 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_SHELF_ALTERNATE_APP_LIST_BUTTON_H_
-#define ASH_SHELF_ALTERNATE_APP_LIST_BUTTON_H_
-
-#include "ui/views/controls/button/image_button.h"
-
-namespace ash {
-class ShelfButtonHost;
-class ShelfWidget;
-
-// Button used for the AppList icon on the shelf.
-// This class is an alternate implementation to ash::AppListButton
-// for the purposes of testing an alternate shelf layout
-// (see ash_switches: UseAlternateShelfLayout).
-class AlternateAppListButton : public views::ImageButton {
- public:
-  // Bounds size (inset) required for the app icon image (in pixels).
-  static const int kImageBoundsSize;
-
-  AlternateAppListButton(views::ButtonListener* listener,
-                         ShelfButtonHost* host,
-                         ShelfWidget* shelf_widget);
-  virtual ~AlternateAppListButton();
-
- protected:
-  // views::ImageButton overrides:
-  virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseCaptureLost() OVERRIDE;
-  virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
-  virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
-
-  // ui::EventHandler overrides:
-  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
-
- private:
-  ShelfButtonHost* host_;
-  // Reference to the shelf widget containing this button, owned by the
-  // root window controller.
-  ShelfWidget* shelf_widget_;
-
-  DISALLOW_COPY_AND_ASSIGN(AlternateAppListButton);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SHELF_ALTERNATE_APP_LIST_BUTTON_H_