[Cleanup] Used scoped pointers in KeyedServiceFactory's SetTestingFactory functions.

chrome/browser/signin/fake_account_tracker_service.cc

 // Copyright 2014 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/signin/fake_account_tracker_service.h"
 
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/chrome_signin_client_factory.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 
 // static
-KeyedService* FakeAccountTrackerService::Build(
+scoped_ptr<KeyedService> FakeAccountTrackerService::Build(
     content::BrowserContext* context) {
   Profile* profile = Profile::FromBrowserContext(context);
   FakeAccountTrackerService* service = new FakeAccountTrackerService();
   service->Initialize(
       ProfileOAuth2TokenServiceFactory::GetForProfile(profile),
       ChromeSigninClientFactory::GetForProfile(profile));
-  return service;
+  return scoped_ptr<KeyedService>(service);
 }
 
 FakeAccountTrackerService::FakeAccountTrackerService() {}
 
 FakeAccountTrackerService::~FakeAccountTrackerService() {}
 
 void FakeAccountTrackerService::StartFetchingUserInfo(
     const std::string& account_id) {
   // In tests, don't do actual network fetch.
 }
@@ skipping 16 matching lines @@
   user_info.SetString("picture", picture_url);
   std::vector<std::string> service_flags;
   SetAccountStateFromUserInfo(
       PickAccountIdForAccount(gaia, email), &user_info, &service_flags);
 }
 
 void FakeAccountTrackerService::SendRefreshTokenAnnotationRequest(
     const std::string& account_id) {
   // In tests, don't do actual network fetch.
 }