Remove the concept of threading from ProxyService, and move it into the Proxy...

net/net.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/common.gypi',
@@ skipping 256 matching lines @@
         'proxy/proxy_resolver_v8.h',
         'proxy/proxy_resolver_winhttp.cc',
         'proxy/proxy_resolver_winhttp.h',
         'proxy/proxy_retry_info.h',
         'proxy/proxy_script_fetcher.cc',
         'proxy/proxy_script_fetcher.h',
         'proxy/proxy_server.cc',
         'proxy/proxy_server.h',
         'proxy/proxy_service.cc',
         'proxy/proxy_service.h',
+        'proxy/single_threaded_proxy_resolver.cc',
+        'proxy/single_threaded_proxy_resolver.h',
         'socket/client_socket.cc',
         'socket/client_socket.h',
         'socket/client_socket_factory.cc',
         'socket/client_socket_factory.h',
         'socket/client_socket_handle.cc',
         'socket/client_socket_handle.h',
         'socket/client_socket_pool.h',
         'socket/client_socket_pool_base.cc',
         'socket/client_socket_pool_base.h',
         'socket/socket.h',
@@ skipping 200 matching lines @@
         'http/http_util_unittest.cc',
         'http/http_vary_data_unittest.cc',
         'proxy/proxy_config_service_linux_unittest.cc',
         'proxy/proxy_config_service_win_unittest.cc',
         'proxy/proxy_config_unittest.cc',
         'proxy/proxy_list_unittest.cc',
         'proxy/proxy_resolver_v8_unittest.cc',
         'proxy/proxy_script_fetcher_unittest.cc',
         'proxy/proxy_server_unittest.cc',
         'proxy/proxy_service_unittest.cc',
+        'proxy/single_threaded_proxy_resolver_unittest.cc',
         'socket/client_socket_pool_base_unittest.cc',
         'socket/socks5_client_socket_unittest.cc',
         'socket/socks_client_socket_unittest.cc',
         'socket/ssl_client_socket_unittest.cc',
         'socket/tcp_client_socket_pool_unittest.cc',
         'socket/tcp_client_socket_unittest.cc',
         'socket/tcp_pinger_unittest.cc',
         'url_request/url_request_unittest.cc',
         'url_request/url_request_unittest.h',
       ],
@@ skipping 203 matching lines @@
           'sources': [
             'tools/dump_cache/dump_cache.cc',
             'tools/dump_cache/dump_files.cc',
             'tools/dump_cache/upgrade.cc',
           ],
         },
       ],
     }],
   ],
 }