Revert 115515 - [Aura] Implement views-based applist.

ui/aura_shell/app_list/app_list_item_model.h

-// Copyright (c) 2011 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 UI_AURA_SHELL_APP_LIST_APP_LIST_ITEM_MODEL_H_
-#define UI_AURA_SHELL_APP_LIST_APP_LIST_ITEM_MODEL_H_
-#pragma once
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/observer_list.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "ui/aura_shell/aura_shell_export.h"
-
-namespace aura_shell {
-
-class AppListItemModelObserver;
-
-// AppListItemModel provides icon and title to be shown in a TileView and
-// action to be executed when the TileView is activated (clicked or enter
-// key it hit).
-class AURA_SHELL_EXPORT AppListItemModel {
- public:
-  AppListItemModel();
-  virtual ~AppListItemModel();
-
-  // Changes icon and title for the model.
-  void SetIcon(const SkBitmap& icon);
-  void SetTitle(const std::string& title);
-
-  void AddObserver(AppListItemModelObserver* observer);
-  void RemoveObserver(AppListItemModelObserver* observer);
-
-  const SkBitmap& icon() const {
-    return icon_;
-  }
-
-  const std::string& title() const {
-    return title_;
-  }
-
- private:
-  SkBitmap icon_;
-  std::string title_;
-
-  ObserverList<AppListItemModelObserver> observers_;
-
-  DISALLOW_COPY_AND_ASSIGN(AppListItemModel);
-};
-
-}  // namespace aura_shell
-
-#endif  // #define UI_AURA_SHELL_APP_LIST_APP_LIST_ITEM_MODEL_H_