Simplify the user agent code some more since after r255534 it's not affected by the site's URL.

chrome/browser/net/preconnect.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/preconnect.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 42 matching lines @@
   // We are now commited to doing the async preconnection call.
   UMA_HISTOGRAM_ENUMERATION("Net.PreconnectMotivation", motivation,
                             UrlInfo::MAX_MOTIVATED);
 
   net::URLRequestContext* context = getter->GetURLRequestContext();
   net::HttpTransactionFactory* factory = context->http_transaction_factory();
   net::HttpNetworkSession* session = factory->GetSession();
 
   std::string user_agent;
   if (context->http_user_agent_settings())
-    user_agent = context->http_user_agent_settings()->GetUserAgent(url);
+    user_agent = context->http_user_agent_settings()->GetUserAgent();
   net::HttpRequestInfo request_info;
   request_info.url = url;
   request_info.method = "GET";
   request_info.extra_headers.SetHeader(net::HttpRequestHeaders::kUserAgent,
                                        user_agent);
 
   net::NetworkDelegate* delegate = context->network_delegate();
   if (delegate->CanEnablePrivacyMode(url, first_party_for_cookies))
     request_info.privacy_mode = net::kPrivacyModeEnabled;
 
@@ skipping 38 matching lines @@
 
   // All preconnects should perform EV certificate verification.
   ssl_config.verify_ev_cert = true;
 
   net::HttpStreamFactory* http_stream_factory = session->http_stream_factory();
   http_stream_factory->PreconnectStreams(count, request_info, priority,
                                          ssl_config, ssl_config);
 }
 
 }  // namespace chrome_browser_net