Remove HTTP pipelining support.

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1257 matching lines @@
         'browser/net/crl_set_fetcher.cc',
         'browser/net/crl_set_fetcher.h',
         'browser/net/dns_probe_runner.cc',
         'browser/net/dns_probe_runner.h',
         'browser/net/dns_probe_service.cc',
         'browser/net/dns_probe_service.h',
         'browser/net/evicted_domain_cookie_counter.cc',
         'browser/net/evicted_domain_cookie_counter.h',
         'browser/net/firefox_proxy_settings.cc',
         'browser/net/firefox_proxy_settings.h',
-        'browser/net/http_pipelining_compatibility_client.cc',
-        'browser/net/http_pipelining_compatibility_client.h',
         'browser/net/http_server_properties_manager.cc',
         'browser/net/http_server_properties_manager.h',
         'browser/net/net_error_tab_helper.cc',
         'browser/net/net_error_tab_helper.h',
         'browser/net/net_log_temp_file.cc',
         'browser/net/net_log_temp_file.h',
         'browser/net/net_pref_observer.cc',
         'browser/net/net_pref_observer.h',
         'browser/net/network_stats.cc',
         'browser/net/network_stats.h',
@@ skipping 2428 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }