Revert "Revert "Const-ify RefCountedThreadSafe::AddRef and Release.""

chrome/service/net/service_url_request_context.cc

 // Copyright (c) 2010 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/service/net/service_url_request_context.h"
 
 #include "base/message_loop_proxy.h"
 #include "chrome/service/service_process.h"
 #include "net/base/cookie_monster.h"
 #include "net/base/cookie_policy.h"
@@ skipping 46 matching lines @@
   delete http_transaction_factory_;
   delete http_auth_handler_factory_;
   delete dnsrr_resolver_;
 }
 
 ServiceURLRequestContextGetter::ServiceURLRequestContextGetter()
     : io_message_loop_proxy_(
           g_service_process->io_thread()->message_loop_proxy()) {
 }
 
-URLRequestContext* ServiceURLRequestContextGetter::GetURLRequestContext() {
+URLRequestContext*
+ServiceURLRequestContextGetter::GetURLRequestContext() {
   if (!url_request_context_)
     url_request_context_ = new ServiceURLRequestContext();
   return url_request_context_;
 }
 
 scoped_refptr<base::MessageLoopProxy>
-ServiceURLRequestContextGetter::GetIOMessageLoopProxy() {
+ServiceURLRequestContextGetter::GetIOMessageLoopProxy() const {
   return io_message_loop_proxy_;
 }
 
 ServiceURLRequestContextGetter::~ServiceURLRequestContextGetter() {}