Updating It2Me to use the new ValidatingAuthenticator class

remoting/host/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/manifest.gni")
 import("//build/util/version.gni")
 import("//chrome/version.gni")
 import("//remoting/remoting_enable.gni")
@@ skipping 592 matching lines @@
     "gcd_rest_client_unittest.cc",
     "gcd_state_updater_unittest.cc",
     "heartbeat_sender_unittest.cc",
     "host_change_notification_listener_unittest.cc",
     "host_config_unittest.cc",
     "host_extension_session_manager_unittest.cc",
     "host_power_save_blocker_unittest.cc",
     "host_status_logger_unittest.cc",
     "ipc_desktop_environment_unittest.cc",
     "it2me/it2me_confirmation_dialog_proxy_unittest.cc",
+    "it2me/it2me_host_unittest.cc",
     "it2me/it2me_native_messaging_host_unittest.cc",
     "linux/audio_pipe_reader_unittest.cc",
     "linux/certificate_watcher_unittest.cc",
     "linux/unicode_to_keysym_unittest.cc",
     "linux/x_server_clipboard_unittest.cc",
     "local_input_monitor_unittest.cc",
     "mouse_cursor_monitor_proxy_unittest.cc",
     "mouse_shape_pump_unittest.cc",
     "native_messaging/native_messaging_reader_unittest.cc",
     "native_messaging/native_messaging_writer_unittest.cc",
@@ skipping 1340 matching lines @@
                       root_build_dir),
           rebase_path(outputs[0], root_build_dir),
         ]
       }
     } else {
       group("remoting_host_installation") {
       }
     }
   }
 }