[components] Switch {RefCounted}ProfileKeyedService to use BrowserContext

chrome/browser/signin/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/token_service_factory.h"
 
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "chrome/browser/signin/token_service.h"
 #include "chrome/browser/webdata/web_data_service_factory.h"
 
@@ skipping 10 matching lines @@
   return static_cast<TokenService*>(
       GetInstance()->GetServiceForProfile(profile, true));
 }
 
 // static
 TokenServiceFactory* TokenServiceFactory::GetInstance() {
   return Singleton<TokenServiceFactory>::get();
 }
 
 ProfileKeyedService* TokenServiceFactory::BuildServiceInstanceFor(
-    Profile* profile) const {
+    content::BrowserContext* profile) const {
   return new TokenService();
 }