Add gnubby authentication to remoting host

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 94 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/gnubby_auth_handler.cc',

[Sergey Ulanov, 2014/02/09 22:29:54]

This file is posix-specific, and I think it won't compile on windows. Which
means it needs to be excluded on windows. If you add _posix suffix then it will
be excluded automatically and then we will need some ifdefs in the code where
it's used. But it would be better to create a stub gnubby_auto_handler_win.cc
which declares GnubbyAuthHandler::Create() that just returns NULL - that's
consistent with how other cross-platform code works.

[psj, 2014/02/10 22:57:22]

Done. I looked at net.gyp to see if unix_domain_socket_posix.cc was
platform-specific, but I didn't realize that file names themselves are
significant within the build system.

+            'host/gnubby_auth_handler.h',
+            'host/gnubby_utils.cc',
+            'host/gnubby_utils.h',
             'host/heartbeat_sender.cc',
             'host/heartbeat_sender.h',
             'host/host_change_notification_listener.cc',
             'host/host_change_notification_listener.h',
             'host/host_config.cc',
             'host/host_config.h',
             'host/host_event_logger.h',
             'host/host_event_logger_posix.cc',
             'host/host_event_logger_win.cc',
             'host/host_exit_codes.cc',
@@ skipping 682 matching lines @@
                 '../base/allocator/allocator.gyp:allocator',
               ],
             }],
           ],
         },  # end of target 'remoting_me2me_native_messaging_host'
       ],  # end of 'targets'
     }],  # OS!="win"
 
   ],  # end of 'conditions'
 }