chromeos: Move files in //ash/common to //ash

ash/common/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_COMMON_SHELF_OVERFLOW_BUTTON_H_
-#define ASH_COMMON_SHELF_OVERFLOW_BUTTON_H_
-
-#include "base/macros.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/views/controls/button/custom_button.h"
-
-namespace ash {
-class ShelfView;
-class WmShelf;
-
-// Shelf overflow chevron button.
-class OverflowButton : public views::CustomButton {
- public:
-  // |shelf_view| is the view containing this button.
-  OverflowButton(ShelfView* shelf_view, WmShelf* wm_shelf);
-  ~OverflowButton() override;
-
-  void OnShelfAlignmentChanged();
-  void OnOverflowBubbleShown();
-  void OnOverflowBubbleHidden();
-
-  // Updates background and schedules a paint.
-  void UpdateShelfItemBackground(SkColor color);
-
- private:
-  // views::CustomButton:
-  void OnPaint(gfx::Canvas* canvas) override;
-  std::unique_ptr<views::InkDrop> CreateInkDrop() override;
-  std::unique_ptr<views::InkDropRipple> CreateInkDropRipple() const override;
-  bool ShouldEnterPushedState(const ui::Event& event) override;
-  void NotifyClick(const ui::Event& event) override;
-  std::unique_ptr<views::InkDropMask> CreateInkDropMask() const 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);
-
-  // Calculates the bounds of the overflow button based on the shelf alignment.
-  gfx::Rect CalculateButtonBounds() const;
-
-  // Used for bottom shelf alignment.
-  gfx::ImageSkia bottom_image_;
-
-  // Cached rotations of |bottom_image_| used for left and right shelf
-  // alignments.
-  gfx::ImageSkia left_image_;
-  gfx::ImageSkia right_image_;
-
-  ShelfView* shelf_view_;
-  WmShelf* wm_shelf_;
-
-  // Color used to paint the background.
-  SkColor background_color_;
-
-  DISALLOW_COPY_AND_ASSIGN(OverflowButton);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_SHELF_OVERFLOW_BUTTON_H_