Add gnubby authentication to remoting host

remoting/remoting_host.gypi

Index: remoting/remoting_host.gypi
diff --git a/remoting/remoting_host.gypi b/remoting/remoting_host.gypi
index 8b865e70c5efdf49aa56d5277d08bfa6bb378106..c5414f5e301532faa065538a22a4a661e2947458 100644
--- a/remoting/remoting_host.gypi
+++ b/remoting/remoting_host.gypi
@@ -112,6 +112,10 @@
             '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',