Add HttpProtocolHandler and convert everything to use it

net/net.gypi

 # Copyright 2014 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 is shared between the regular GYP build, the NaCl GYP build, and
 # the GN build. For GN support, it must have no conditionals or anything like
 # that beyond the simple one-level-deep dictionary of values.
 {
   'variables': {
     # Subset of net source files that are compiled for NaCl (net_nacl target).
@@ skipping 1221 matching lines @@
       'udp/udp_server_socket.h',
       'udp/udp_socket.h',
       'udp/udp_socket_posix.cc',
       'udp/udp_socket_posix.h',
       'udp/udp_socket_win.cc',
       'udp/udp_socket_win.h',
       'url_request/certificate_report_sender.cc',
       'url_request/certificate_report_sender.h',
       'url_request/data_protocol_handler.cc',
       'url_request/data_protocol_handler.h',
+      'url_request/http_protocol_handler.cc',
+      'url_request/http_protocol_handler.h',
       'url_request/http_user_agent_settings.h',
       'url_request/redirect_info.cc',
       'url_request/redirect_info.h',
       'url_request/sdch_dictionary_fetcher.cc',
       'url_request/sdch_dictionary_fetcher.h',
       'url_request/static_http_user_agent_settings.cc',
       'url_request/static_http_user_agent_settings.h',
       'url_request/url_fetcher.cc',
       'url_request/url_fetcher.h',
       'url_request/url_fetcher_core.cc',
@@ skipping 751 matching lines @@
       "websockets/websocket_handshake_stream_create_helper.cc",
       "websockets/websocket_handshake_stream_create_helper.h",
       "websockets/websocket_inflater.cc",
       "websockets/websocket_inflater.h",
       "websockets/websocket_mux.h",
       "websockets/websocket_stream.cc",
       "websockets/websocket_stream.h",
     ],
   }
 }