Revert 273652 "Host extensions"

trunk/src/remoting/remoting_host.gypi

 # 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.
 
 {
   'includes': [
     'remoting_host_linux.gypi',
     'remoting_host_mac.gypi',
     'remoting_host_win.gypi',
   ],
@@ skipping 101 matching lines @@
             'host/desktop_shape_tracker.h',
             'host/desktop_shape_tracker_mac.cc',
             'host/desktop_shape_tracker_win.cc',
             'host/desktop_shape_tracker_x11.cc',
             'host/disconnect_window_linux.cc',
             'host/disconnect_window_mac.h',
             'host/disconnect_window_mac.mm',
             'host/disconnect_window_win.cc',
             'host/dns_blackhole_checker.cc',
             'host/dns_blackhole_checker.h',
-            'host/extension.h',
-            'host/extension_session.h',
             'host/gnubby_auth_handler_posix.cc',
             'host/gnubby_auth_handler_posix.h',
             'host/gnubby_auth_handler_win.cc',
             'host/gnubby_auth_handler.h',
             'host/gnubby_socket.cc',
             'host/gnubby_socket.h',
             'host/heartbeat_sender.cc',
             'host/heartbeat_sender.h',
             'host/host_change_notification_listener.cc',
             'host/host_change_notification_listener.h',
@@ skipping 805 matching lines @@
                 }],  # mac_breakpad==1
               ],  # conditions
             }],  # OS=mac
           ],
         },  # end of target 'remoting_it2me_native_messaging_host'
       ],  # end of 'targets'
     }],  # OS!="win"
 
   ],  # end of 'conditions'
 }