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

ash/app_list/app_list_shower_delegate_factory.cc

-// Copyright 2016 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/app_list/app_list_shower_delegate_factory.h"
-
-#include "ash/app_list/app_list_shower_delegate.h"
-#include "ash/app_list/app_list_view_delegate_factory.h"
-#include "base/memory/ptr_util.h"
-
-namespace ash {
-
-AppListShowerDelegateFactory::AppListShowerDelegateFactory(
-    std::unique_ptr<AppListViewDelegateFactory> view_delegate_factory)
-    : view_delegate_factory_(std::move(view_delegate_factory)) {}
-
-AppListShowerDelegateFactory::~AppListShowerDelegateFactory() {}
-
-std::unique_ptr<app_list::AppListShowerDelegate>
-AppListShowerDelegateFactory::GetDelegate(app_list::AppListShower* shower) {
-  return base::WrapUnique(
-      new AppListShowerDelegate(shower, view_delegate_factory_.get()));
-}
-
-}  // namespace ash