Google OAuth Device Flow support for FNL

examples/authentication_demo/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("//mojo/public/mojo_application.gni")
 
-mojo_native_application("wget") {
+mojo_native_application("authentication_demo") {
+  sources = [
+    "google_authentication_demo.cc",
+  ]
+
   deps = [
+    "//base",
+    "//mojo/common",
     "//mojo/public/cpp/application:standalone",
     "//mojo/public/cpp/bindings",
+    "//mojo/public/cpp/system",
     "//mojo/public/cpp/utility",
-    "//mojo/services/network/interfaces",
-  ]
-
-  sources = [
-    "wget.cc",
+    "//mojo/services/authentication/interfaces",
   ]
 }