Remove HTTP pipelining support.

chrome/installer/util/chrome_app_host_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 a specific implementation of BrowserDistribution class for
 // Chrome App Host. It overrides the bare minimum of methods necessary to get a
 // Chrome App Host installer that does not interact with Google Chrome or
 // Chromium installations.
 
 #include "chrome/installer/util/chrome_app_host_distribution.h"
@@ skipping 90 matching lines @@
   base::string16 key(google_update::kRegPathClientStateMedium);
   key.append(L"\\");
   key.append(kChromeAppHostGuid);
   return key;
 }
 
 std::string ChromeAppHostDistribution::GetNetworkStatsServer() const {
   return chrome_common_net::kEchoTestServerLocation;
 }
 
-std::string ChromeAppHostDistribution::GetHttpPipeliningTestServer() const {
-  return chrome_common_net::kPipelineTestServerBaseUrl;
-}
-
 base::string16 ChromeAppHostDistribution::GetUninstallLinkName() {
   const base::string16& link_name =
       installer::GetLocalizedString(IDS_UNINSTALL_APP_LAUNCHER_BASE);
   return link_name;
 }
 
 base::string16 ChromeAppHostDistribution::GetUninstallRegPath() {
   return L"Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\"
          L"Google Chrome App Launcher";
 }
@@ skipping 25 matching lines @@
 
 void ChromeAppHostDistribution::UpdateInstallStatus(bool system_install,
     installer::ArchiveType archive_type,
     installer::InstallStatus install_status) {
 #if defined(GOOGLE_CHROME_BUILD)
   GoogleUpdateSettings::UpdateInstallStatus(system_install,
       archive_type, InstallUtil::GetInstallReturnCode(install_status),
       kChromeAppHostGuid);
 #endif
 }