Add optional creation to ProfileKeyedServiceFactory.

chrome/browser/background_mode_manager_factory.cc

 // Copyright (c) 2011 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/background_mode_manager_factory.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/background_mode_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 
 // static
 BackgroundModeManager* BackgroundModeManagerFactory::GetForProfile(
     Profile* profile) {
   return static_cast<BackgroundModeManager*>(
-      GetInstance()->GetServiceForProfile(profile));
+      GetInstance()->GetServiceForProfile(profile, true));
 }
 
 // static
 BackgroundModeManagerFactory* BackgroundModeManagerFactory::GetInstance() {
   return Singleton<BackgroundModeManagerFactory>::get();
 }
 
 BackgroundModeManagerFactory::BackgroundModeManagerFactory()
     : ProfileKeyedServiceFactory(ProfileDependencyManager::GetInstance()) {
 }
 
 BackgroundModeManagerFactory::~BackgroundModeManagerFactory() {
 }
 
 ProfileKeyedService* BackgroundModeManagerFactory::BuildServiceInstanceFor(
     Profile* profile) const {
   return new BackgroundModeManager(profile, CommandLine::ForCurrentProcess());
 }