Revert of AppListController refactoring part 2: Ash's AppListShowerDelegate imlementation.

ash/app_list/app_list_shower_delegate.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_APP_LIST_APP_LIST_SHOWER_DELEGATE_H_
-#define ASH_APP_LIST_APP_LIST_SHOWER_DELEGATE_H_
-
-#include "ash/ash_export.h"
-#include "ash/shelf/shelf_icon_observer.h"
-#include "ash/shell_observer.h"
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "ui/app_list/shower/app_list_shower_delegate.h"
-#include "ui/events/event_handler.h"
-#include "ui/keyboard/keyboard_controller_observer.h"
-
-namespace app_list {
-class ApplicationDragAndDropHost;
-class AppListView;
-}
-
-namespace app_list {
-class AppListShower;
-}
-
-namespace ui {
-class LocatedEvent;
-}
-
-namespace ash {
-
-namespace test {
-class AppListShowerAshTestApi;
-}
-
-class AppListViewDelegateFactory;
-
-// Responsible for laying out the app list UI as well as updating the Shelf
-// launch icon as the state of the app list changes. Listens to shell events
-// and touches/mouse clicks outside the app list to auto dismiss the UI or
-// update its layout as necessary.
-class ASH_EXPORT AppListShowerDelegate
-    : public app_list::AppListShowerDelegate,
-      public ui::EventHandler,
-      public keyboard::KeyboardControllerObserver,
-      public ShellObserver,
-      public ShelfIconObserver {
- public:
-  AppListShowerDelegate(app_list::AppListShower* shower,
-                        AppListViewDelegateFactory* view_delegate_factory);
-  ~AppListShowerDelegate() override;
-
-  // app_list::AppListShowerDelegate:
-  app_list::AppListViewDelegate* GetViewDelegate() override;
-  void Init(app_list::AppListView* view,
-            aura::Window* root_window,
-            int current_apps_page) override;
-  void OnShown(aura::Window* root_window) override;
-  void OnDismissed() override;
-  void UpdateBounds() override;
-  gfx::Vector2d GetVisibilityAnimationOffset(
-      aura::Window* root_window) override;
-
- private:
-  void ProcessLocatedEvent(ui::LocatedEvent* event);
-
-  // ui::EventHandler overrides:
-  void OnMouseEvent(ui::MouseEvent* event) override;
-  void OnGestureEvent(ui::GestureEvent* event) override;
-
-  // KeyboardControllerObserver overrides:
-  void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) override;
-
-  // ShellObserver overrides:
-  void OnShelfAlignmentChanged(aura::Window* root_window) override;
-  void OnMaximizeModeStarted() override;
-  void OnMaximizeModeEnded() override;
-
-  // ShelfIconObserver overrides:
-  void OnShelfIconPositionsChanged() override;
-
-  // Whether the app list is visible (or in the process of being shown).
-  bool is_visible_ = false;
-
-  // Whether the app list should remain centered.
-  bool is_centered_ = false;
-
-  // Not owned. Pointer is guaranteed to be valid while this object is alive.
-  app_list::AppListShower* shower_;
-
-  // Not owned. Pointer is guaranteed to be valid while this object is alive.
-  AppListViewDelegateFactory* view_delegate_factory_;
-
-  // The AppListView this class manages, owned by its widget.
-  app_list::AppListView* view_ = nullptr;
-
-  DISALLOW_COPY_AND_ASSIGN(AppListShowerDelegate);
-};
-
-}  // namespace ash
-
-#endif  // ASH_APP_LIST_APP_LIST_SHOWER_DELEGATE_H_