Revert 255858 "Simplify the user agent code some more since afte..."

trunk/src/chrome/browser/net/basic_http_user_agent_settings.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/net/basic_http_user_agent_settings.h"
 
 #include "content/public/common/content_client.h"
 
 BasicHttpUserAgentSettings::BasicHttpUserAgentSettings(
     const std::string& accept_language)
     : accept_language_(accept_language) {
 }
 
 BasicHttpUserAgentSettings::~BasicHttpUserAgentSettings() {
 }
 
 std::string BasicHttpUserAgentSettings::GetAcceptLanguage() const {
   return accept_language_;
 }
 
 std::string BasicHttpUserAgentSettings::GetUserAgent(const GURL& url) const {
   return content::GetUserAgent(url);
 }