Refactor AO2TS to make it easier to componentize.

chrome/browser/signin/fake_profile_oauth2_token_service_builder.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/profiles/profile.h"
 #include "chrome/browser/signin/chrome_signin_client_factory.h"
 #include "chrome/browser/signin/fake_profile_oauth2_token_service.h"
 #include "chrome/browser/signin/fake_profile_oauth2_token_service_builder.h"
 #include "chrome/browser/signin/signin_error_controller_factory.h"
 
 // TODO(blundell): Should these be namespaced?
 KeyedService* BuildFakeProfileOAuth2TokenService(
     content::BrowserContext* context) {
-  Profile* profile = Profile::FromBrowserContext(context);
   FakeProfileOAuth2TokenService* service = new FakeProfileOAuth2TokenService();
-  service->Initialize(
-      ChromeSigninClientFactory::GetInstance()->GetForProfile(profile),
-      SigninErrorControllerFactory::GetInstance()->GetForProfile(profile));
   return service;
 }
 
 KeyedService* BuildAutoIssuingFakeProfileOAuth2TokenService(
     content::BrowserContext* context) {
-  Profile* profile = Profile::FromBrowserContext(context);
   FakeProfileOAuth2TokenService* service = new FakeProfileOAuth2TokenService();
   service->set_auto_post_fetch_response_on_message_loop(true);
-  service->Initialize(
-      ChromeSigninClientFactory::GetInstance()->GetForProfile(profile),
-      SigninErrorControllerFactory::GetInstance()->GetForProfile(profile));
   return service;
 }