Add optional creation to ProfileKeyedServiceFactory.

chrome/browser/tabs/pinned_tab_service_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/tabs/pinned_tab_service_factory.h"
 
 #include "chrome/browser/tabs/pinned_tab_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 
 // static
 PinnedTabService* PinnedTabServiceFactory::GetForProfile(
     Profile* profile) {
   return static_cast<PinnedTabService*>(
-      GetInstance()->GetServiceForProfile(profile));
+      GetInstance()->GetServiceForProfile(profile, true));
 }
 
 PinnedTabServiceFactory* PinnedTabServiceFactory::GetInstance() {
   return Singleton<PinnedTabServiceFactory>::get();
 }
 
 PinnedTabServiceFactory::PinnedTabServiceFactory()
     : ProfileKeyedServiceFactory(ProfileDependencyManager::GetInstance()) {
 }
 
 PinnedTabServiceFactory::~PinnedTabServiceFactory() {
 }
 
 ProfileKeyedService* PinnedTabServiceFactory::BuildServiceInstanceFor(
     Profile* profile) const {
   return new PinnedTabService(profile);
 }