Remove the need to have separate config for authentication.

remoting/remoting.gyp

 # 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.
 
 {
   'variables': {
     # TODO(dmaclach): can we pick this up some other way? Right now it's
     # duplicated from chrome.gyp
     'chromium_code': 1,
     'remoting_audio': 0,
@@ skipping 1186 matching lines @@
         'host/chromoting_host.cc',
         'host/chromoting_host.h',
         'host/chromoting_host_context.cc',
         'host/chromoting_host_context.h',
         'host/client_session.cc',
         'host/client_session.h',
         'host/clipboard.h',
         'host/clipboard_linux.cc',
         'host/clipboard_mac.mm',
         'host/clipboard_win.cc',
+        'host/composite_host_config.cc',
+        'host/composite_host_config.h',
         'host/constants.h',
         'host/constants_mac.cc',
         'host/constants_mac.h',
         'host/constants_win.cc',
         'host/continue_window.h',
         'host/continue_window_gtk.cc',
         'host/continue_window_mac.mm',
         'host/continue_window_win.cc',
         'host/desktop_environment.cc',
         'host/desktop_environment.h',
         'host/differ.cc',
         'host/differ.h',
         'host/disconnect_window.h',
         'host/disconnect_window_gtk.cc',
         'host/disconnect_window_mac.h',
         'host/disconnect_window_mac.mm',
         'host/disconnect_window_win.cc',
         'host/event_executor.h',
         'host/event_executor_linux.cc',
         'host/event_executor_mac.cc',
         'host/event_executor_win.cc',
+        'host/gaia_oauth_client.cc',
+        'host/gaia_oauth_client.h',
         'host/heartbeat_sender.cc',
         'host/heartbeat_sender.h',
-        'host/gaia_oauth_client.cc',
-        'host/gaia_oauth_client.h',
         'host/host_config.cc',
         'host/host_config.h',
         'host/host_key_pair.cc',
         'host/host_key_pair.h',
         'host/host_port_allocator.cc',
         'host/host_port_allocator.h',
         'host/host_secret.cc',
         'host/host_secret.h',
         'host/host_status_observer.h',
         'host/host_user_interface.cc',
@@ skipping 584 matching lines @@
                   '../base/allocator/allocator.gyp:allocator',
                 ],
               },
             ],
           ],
         }],
       ],  # end of 'conditions'
     },  # end of target 'remoting_unittests'
   ],  # end of targets
 }