mash: Support ShelfModel access in Chrome.

ash/shelf/app_list_shelf_item_delegate.cc

 // 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.
 
 #include "ash/shelf/app_list_shelf_item_delegate.h"
 
 #include <utility>
 
 #include "ash/shelf/shelf_model.h"
 #include "ash/shell.h"
-#include "ash/strings/grit/ash_strings.h"
-#include "base/memory/ptr_util.h"
-#include "ui/app_list/app_list_switches.h"
-#include "ui/base/l10n/l10n_util.h"
 
 namespace ash {
 
-namespace {
-
-// An app id for the app list, used to identify the shelf item.
-// Generated as crx_file::id_util::GenerateId("org.chromium.applist")
-static constexpr char kAppListId[] = "jlfapfmkapbjlfbpjedlinehodkccjee";
-
-}  // namespace
-
-// static
-void AppListShelfItemDelegate::CreateAppListItemAndDelegate(ShelfModel* model) {
-  // Add the app list item to the shelf model.
-  ShelfItem item;
-  item.type = TYPE_APP_LIST;
-  item.id = ShelfID(kAppListId);
-  item.title = l10n_util::GetStringUTF16(IDS_ASH_SHELF_APP_LIST_LAUNCHER_TITLE);
-  int index = model->Add(item);
-  DCHECK_GE(index, 0);
-
-  // Create an AppListShelfItemDelegate for that item.
-  model->SetShelfItemDelegate(item.id,
-                              base::MakeUnique<AppListShelfItemDelegate>());
-}
-
 AppListShelfItemDelegate::AppListShelfItemDelegate()
     : ShelfItemDelegate(ShelfID(kAppListId)) {}
 
 AppListShelfItemDelegate::~AppListShelfItemDelegate() {}
 
 void AppListShelfItemDelegate::ItemSelected(std::unique_ptr<ui::Event> event,
                                             int64_t display_id,
                                             ShelfLaunchSource source,
                                             ItemSelectedCallback callback) {
   Shell::Get()->ToggleAppList();
   std::move(callback).Run(SHELF_ACTION_APP_LIST_SHOWN, base::nullopt);
 }
 
 void AppListShelfItemDelegate::ExecuteCommand(uint32_t command_id,
                                               int32_t event_flags) {
   // This delegate does not support showing an application menu.
   NOTIMPLEMENTED();
 }
 
 void AppListShelfItemDelegate::Close() {}
 
 }  // namespace ash