Move Mac LaunchOnStartup enable/disable to File thread

chrome/browser/prefs/browser_prefs.cc

 // Copyright (c) 2010 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/prefs/browser_prefs.h"
 
 #include "chrome/browser/about_flags.h"
 #include "chrome/browser/autofill/autofill_manager.h"
 #include "chrome/browser/background_contents_service.h"
 #include "chrome/browser/background_mode_manager.h"
@@ skipping 94 matching lines @@
   WizardController::RegisterPrefs(local_state);
   chromeos::InputMethodMenuButton::RegisterPrefs(local_state);
   chromeos::ApplyServicesCustomization::RegisterPrefs(local_state);
   chromeos::SignedSettingsTempStorage::RegisterPrefs(local_state);
 #endif
 }
 
 void RegisterUserPrefs(PrefService* user_prefs) {
   // User prefs
   AutoFillManager::RegisterUserPrefs(user_prefs);
-  BackgroundModeManager::RegisterUserPrefs(user_prefs);
   SessionStartupPref::RegisterUserPrefs(user_prefs);
   Browser::RegisterUserPrefs(user_prefs);
   PasswordManager::RegisterUserPrefs(user_prefs);
   chrome_browser_net::RegisterUserPrefs(user_prefs);
   DownloadPrefs::RegisterUserPrefs(user_prefs);
   bookmark_utils::RegisterUserPrefs(user_prefs);
   TabContents::RegisterUserPrefs(user_prefs);
   TemplateURLPrepopulateData::RegisterUserPrefs(user_prefs);
   ExtensionDOMUI::RegisterUserPrefs(user_prefs);
   ExtensionsUI::RegisterUserPrefs(user_prefs);
@@ skipping 19 matching lines @@
   chromeos::Preferences::RegisterUserPrefs(user_prefs);
 #endif
   BackgroundContentsService::RegisterUserPrefs(user_prefs);
   SigninManager::RegisterUserPrefs(user_prefs);
   TemplateURLModel::RegisterUserPrefs(user_prefs);
   InstantController::RegisterUserPrefs(user_prefs);
   NetPrefObserver::RegisterPrefs(user_prefs);
 }
 
 }  // namespace browser