Remove HTTP pipelining support.

chrome/installer/util/google_chrome_distribution.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.
 //
 // This file defines specific implementation of BrowserDistribution class for
 // Google Chrome.
 
 #include "chrome/installer/util/google_chrome_distribution.h"
 
 #include <windows.h>
@@ skipping 188 matching lines @@
   base::string16 key(google_update::kRegPathClientStateMedium);
   key.append(L"\\");
   key.append(product_guid());
   return key;
 }
 
 std::string GoogleChromeDistribution::GetNetworkStatsServer() const {
   return chrome_common_net::kEchoTestServerLocation;
 }
 
-std::string GoogleChromeDistribution::GetHttpPipeliningTestServer() const {
-  return chrome_common_net::kPipelineTestServerBaseUrl;
-}
-
 base::string16 GoogleChromeDistribution::GetDistributionData(HKEY root_key) {
   base::string16 sub_key(google_update::kRegPathClientState);
   sub_key.append(L"\\");
   sub_key.append(product_guid());
 
   base::win::RegKey client_state_key(root_key, sub_key.c_str(), KEY_READ);
   base::string16 result;
   base::string16 brand_value;
   if (client_state_key.ReadValue(google_update::kRegRLZBrandField,
                                  &brand_value) == ERROR_SUCCESS) {
@@ skipping 72 matching lines @@
       product_guid());
 }
 
 bool GoogleChromeDistribution::ShouldSetExperimentLabels() {
   return true;
 }
 
 bool GoogleChromeDistribution::HasUserExperiments() {
   return true;
 }