Refactor OAuth2TokenService to have profile- and device-based implementations.

chrome/browser/signin/oauth2_token_service_factory.cc

-// Copyright (c) 2012 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/oauth2_token_service_factory.h"
-
-#include "chrome/browser/profiles/profile_dependency_manager.h"
-#include "chrome/browser/signin/oauth2_token_service.h"
-#include "chrome/browser/signin/signin_manager_factory.h"
-#include "chrome/browser/signin/token_service_factory.h"
-
-OAuth2TokenServiceFactory::OAuth2TokenServiceFactory()
-    : ProfileKeyedServiceFactory("OAuth2TokenService",
-                                 ProfileDependencyManager::GetInstance()) {
-  DependsOn(SigninManagerFactory::GetInstance());
-  DependsOn(TokenServiceFactory::GetInstance());
-}
-
-OAuth2TokenServiceFactory::~OAuth2TokenServiceFactory() {
-}
-
-// static
-OAuth2TokenService* OAuth2TokenServiceFactory::GetForProfile(Profile* profile) {
-  return static_cast<OAuth2TokenService*>(
-      GetInstance()->GetServiceForProfile(profile, true));
-}
-
-// static
-OAuth2TokenServiceFactory* OAuth2TokenServiceFactory::GetInstance() {
-  return Singleton<OAuth2TokenServiceFactory>::get();
-}
-
-ProfileKeyedService* OAuth2TokenServiceFactory::BuildServiceInstanceFor(
-    Profile* profile) const {
-  OAuth2TokenService* service = new OAuth2TokenService();
-  service->Initialize(profile);
-  return service;
-}