Discard unused AppListPrefs code.

chrome/browser/ui/app_list/app_list_syncable_service.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/app_list/app_list_syncable_service.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "build/build_config.h"
 #include "chrome/browser/apps/drive/drive_app_provider.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/app_list/app_list_prefs.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 #include "chrome/browser/ui/app_list/extension_app_item.h"
 #include "chrome/browser/ui/app_list/extension_app_model_builder.h"
-#include "chrome/browser/ui/app_list/model_pref_updater.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/sync/model/sync_change_processor.h"
 #include "components/sync/model/sync_data.h"
 #include "components/sync/model/sync_merge_result.h"
 #include "components/sync/protocol/sync.pb.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/uninstall_reason.h"
@@ skipping 236 matching lines @@
     return;
   }
 
   oem_folder_name_ =
       l10n_util::GetStringUTF8(IDS_APP_LIST_OEM_DEFAULT_FOLDER_NAME);
 }
 
 AppListSyncableService::~AppListSyncableService() {
   // Remove observers.
   model_observer_.reset();
-  model_pref_updater_.reset();
 }
 
 void AppListSyncableService::BuildModel() {
   // TODO(calamity): make this a DCHECK after a dev channel release.
   CHECK(extension_system_->extension_service() &&
         extension_system_->extension_service()->is_ready());
   AppListControllerDelegate* controller = NULL;
   AppListService* service = AppListService::Get();
   if (service)
     controller = service->GetControllerDelegate();
@@ skipping 13 matching lines @@
 #endif
   } else {
     VLOG(1) << this << ": AppListSyncableService: InitializeWithProfile.";
     apps_builder_->InitializeWithProfile(profile_, model_.get());
 #if defined(OS_CHROMEOS)
     if (arc_apps_builder_.get())
       arc_apps_builder_->InitializeWithProfile(profile_, model_.get());
 #endif
   }
 
-  model_pref_updater_.reset(
-      new ModelPrefUpdater(AppListPrefs::Get(profile_), model_.get()));
-
   if (app_list::switches::IsDriveAppsInAppListEnabled())
     drive_app_provider_.reset(new DriveAppProvider(profile_, this));
 }
 
 void AppListSyncableService::AddObserverAndStart(Observer* observer) {
   observer_list_.AddObserver(observer);
   SyncStarted();
 }
 
 void AppListSyncableService::RemoveObserver(Observer* observer) {
@@ skipping 749 matching lines @@
     res += " { " + item_name + " }";
     res += " [" + item_ordinal.ToDebugString() + "]";
     if (!parent_id.empty())
       res += " <" + parent_id.substr(0, 8) + ">";
     res += " [" + item_pin_ordinal.ToDebugString() + "]";
   }
   return res;
 }
 
 }  // namespace app_list