mash: Convert ash shelf overflow bubble to wm common types

ash/shelf/overflow_button.h

-// Copyright 2013 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_OVERFLOW_BUTTON_H_
-#define ASH_SHELF_OVERFLOW_BUTTON_H_
-
-#include "ash/common/shelf/shelf_types.h"
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/views/controls/button/custom_button.h"
-
-namespace ash {
-class InkDropButtonListener;
-class Shelf;
-
-// Shelf overflow chevron button.
-class OverflowButton : public views::CustomButton {
- public:
-  OverflowButton(InkDropButtonListener* listener, Shelf* shelf);
-  ~OverflowButton() override;
-
-  void OnShelfAlignmentChanged();
-
- private:
-  // views::View:
-  void OnPaint(gfx::Canvas* canvas) override;
-
-  // views::CustomButton:
-  void NotifyClick(const ui::Event& event) override;
-
-  // Helper functions to paint the background and foreground of the button
-  // at |bounds|.
-  void PaintBackground(gfx::Canvas* canvas, const gfx::Rect& bounds);
-  void PaintForeground(gfx::Canvas* canvas, const gfx::Rect& bounds);
-
-  // Returns the id of the asset to use for the button backgound based on the
-  // current shelf state.
-  // TODO(tdanderson): Remove this once the material design shelf is enabled
-  // by default. See crbug.com/614453.
-  int NonMaterialBackgroundImageId();
-
-  // Calculates the bounds of the overflow button based on the shelf alignment.
-  gfx::Rect CalculateButtonBounds();
-
-  // Used for bottom shelf alignment. |bottom_image_| points to
-  // |bottom_image_md_| for material design, otherwise it is points to a
-  // resource owned by the ResourceBundle.
-  // TODO(tdanderson): Remove the non-md code once the material design shelf is
-  // enabled by default. See crbug.com/614453.
-  const gfx::ImageSkia* bottom_image_;
-  gfx::ImageSkia bottom_image_md_;
-
-  // Cached rotations of |bottom_image_| used for left and right shelf
-  // alignments.
-  gfx::ImageSkia left_image_;
-  gfx::ImageSkia right_image_;
-
-  InkDropButtonListener* listener_;
-  Shelf* shelf_;
-
-  DISALLOW_COPY_AND_ASSIGN(OverflowButton);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SHELF_OVERFLOW_BUTTON_H_