Remove old (dead) app list code.

chrome/browser/ui/ash/app_list/app_list_service_ash.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 "chrome/browser/ui/ash/app_list/app_list_service_ash.h"
 
 #include "ash/app_list/app_list_presenter_delegate.h"
 #include "ash/app_list/app_list_presenter_delegate_factory.h"
 #include "ash/shell.h"
 #include "base/files/file_path.h"
@@ skipping 128 matching lines @@
 
 void AppListServiceAsh::ShowForProfile(Profile* /*default_profile*/) {
   // This may not work correctly if the profile passed in is different from the
   // one the ash Shell is currently using.
   app_list_presenter_->Show(ash::Shell::GetTargetDisplayId());
 }
 
 void AppListServiceAsh::ShowForAppInstall(Profile* profile,
                                           const std::string& extension_id,
                                           bool start_discovery_tracking) {
-  if (app_list::switches::IsExperimentalAppListEnabled())
-    ShowAndSwitchToState(app_list::AppListModel::STATE_APPS);
-
+  ShowAndSwitchToState(app_list::AppListModel::STATE_APPS);
   AppListServiceImpl::ShowForAppInstall(profile, extension_id,
                                         start_discovery_tracking);
 }
 
 void AppListServiceAsh::ShowForCustomLauncherPage(Profile* /*profile*/) {
   ShowAndSwitchToState(app_list::AppListModel::STATE_CUSTOM_LAUNCHER_PAGE);
 }
 
 void AppListServiceAsh::HideCustomLauncherPage() {
   app_list::AppListView* app_list_view = app_list_presenter_->GetView();
@@ skipping 43 matching lines @@
 // static
 AppListService* AppListService::Get() {
   return AppListServiceAsh::GetInstance();
 }
 
 // static
 void AppListService::InitAll(Profile* initial_profile,
                              const base::FilePath& profile_path) {
   AppListServiceAsh::GetInstance()->Init(initial_profile);
 }