mash: Remove StatusAreaWidget references from system tray classes

ash/system/web_notification/ash_popup_alignment_delegate.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_SYSTEM_WEB_NOTIFICATION_ASH_POPUP_ALIGNMENT_DELEGATE_H_
-#define ASH_SYSTEM_WEB_NOTIFICATION_ASH_POPUP_ALIGNMENT_DELEGATE_H_
-
-#include <stdint.h>
-
-#include "ash/ash_export.h"
-#include "ash/common/shelf/shelf_types.h"
-#include "ash/common/shelf/wm_shelf_observer.h"
-#include "ash/common/shell_observer.h"
-#include "base/macros.h"
-#include "ui/display/display_observer.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/message_center/views/popup_alignment_delegate.h"
-
-namespace display {
-class Screen;
-}
-
-namespace ash {
-
-class AshPopupAlignmentDelegateTest;
-class ShelfLayoutManager;
-class WebNotificationTrayTest;
-class WmShelf;
-
-// The PopupAlignmentDelegate subclass for Ash. It needs to handle alignment of
-// the shelf and its autohide state.
-class ASH_EXPORT AshPopupAlignmentDelegate
-    : public message_center::PopupAlignmentDelegate,
-      public WmShelfObserver,
-      public ShellObserver,
-      public display::DisplayObserver {
- public:
-  explicit AshPopupAlignmentDelegate(WmShelf* shelf);
-  ~AshPopupAlignmentDelegate() override;
-
-  // Start observing the system.
-  void StartObserving(display::Screen* screen, const display::Display& display);
-
-  // Sets the current height of the system tray so that the notification toasts
-  // can avoid it.
-  void SetSystemTrayHeight(int height);
-
-  // Returns the current system tray height.
-  int system_tray_height_for_test() const { return system_tray_height_; }
-
-  // Overridden from message_center::PopupAlignmentDelegate:
-  int GetToastOriginX(const gfx::Rect& toast_bounds) const override;
-  int GetBaseLine() const override;
-  int GetWorkAreaBottom() const override;
-  bool IsTopDown() const override;
-  bool IsFromLeft() const override;
-  void RecomputeAlignment(const display::Display& display) override;
-  void ConfigureWidgetInitParamsForContainer(
-      views::Widget* widget,
-      views::Widget::InitParams* init_params) override;
-
- private:
-  friend class AshPopupAlignmentDelegateTest;
-  friend class WebNotificationTrayTest;
-
-  // Get the current alignment of the shelf.
-  ShelfAlignment GetAlignment() const;
-
-  // Utility function to get the display which should be care about.
-  display::Display GetCurrentDisplay() const;
-
-  // Compute the new work area.
-  void UpdateWorkArea();
-
-  // Overridden from ShellObserver:
-  void OnDisplayWorkAreaInsetsChanged() override;
-
-  // WmShelfObserver:
-  void WillChangeVisibilityState(ShelfVisibilityState new_state) override;
-  void OnAutoHideStateChanged(ShelfAutoHideState new_state) override;
-
-  // Overridden from display::DisplayObserver:
-  void OnDisplayAdded(const display::Display& new_display) override;
-  void OnDisplayRemoved(const display::Display& old_display) override;
-  void OnDisplayMetricsChanged(const display::Display& display,
-                               uint32_t metrics) override;
-
-  display::Screen* screen_;
-  gfx::Rect work_area_;
-  WmShelf* shelf_;
-  int system_tray_height_;
-
-  DISALLOW_COPY_AND_ASSIGN(AshPopupAlignmentDelegate);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_WEB_NOTIFICATION_ASH_POPUP_ALIGNMENT_DELEGATE_H_