Remove dependency on PAM from the It2Me host

remoting/remoting_host_srcs.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.
 
 {
   'variables': {
     'remoting_host_sources': [
       'host/audio_capturer.cc',
       'host/audio_capturer.h',
       'host/audio_capturer_linux.cc',
@@ skipping 169 matching lines @@
       'host/mouse_shape_pump.h',
       'host/oauth_token_getter.cc',
       'host/oauth_token_getter.h',
       'host/pairing_registry_delegate.cc',
       'host/pairing_registry_delegate.h',
       'host/pairing_registry_delegate_linux.cc',
       'host/pairing_registry_delegate_linux.h',
       'host/pairing_registry_delegate_mac.cc',
       'host/pairing_registry_delegate_win.cc',
       'host/pairing_registry_delegate_win.h',
-      'host/pam_authorization_factory_posix.cc',
-      'host/pam_authorization_factory_posix.h',
       'host/pin_hash.cc',
       'host/pin_hash.h',
       'host/policy_watcher.cc',
       'host/policy_watcher.h',
       'host/register_support_host_request.cc',
       'host/register_support_host_request.h',
       'host/remote_input_filter.cc',
       'host/remote_input_filter.h',
-      'host/remoting_me2me_host.cc',
       'host/resizing_host_observer.cc',
       'host/resizing_host_observer.h',
       'host/sas_injector.h',
       'host/sas_injector_win.cc',
       'host/screen_controls.h',
       'host/screen_resolution.cc',
       'host/screen_resolution.h',
       'host/server_log_entry_host.cc',
       'host/server_log_entry_host.h',
       'host/session_manager_factory.cc',
@@ skipping 62 matching lines @@
       'host/it2me/it2me_confirmation_dialog_chromeos.cc',
       'host/it2me/it2me_confirmation_dialog_proxy.cc',
       'host/it2me/it2me_confirmation_dialog_proxy.h',
       'host/it2me/it2me_host.cc',
       'host/it2me/it2me_host.h',
       'host/it2me/it2me_native_messaging_host.cc',
       'host/it2me/it2me_native_messaging_host.h',
     ],
   }
 }