[ARC] Add browser test of ArcAuthService

chrome/test/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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 2037 matching lines @@
         "../browser/chromeos/accessibility/magnification_manager_browsertest.cc",
         "../browser/chromeos/accessibility/speech_monitor.cc",
         "../browser/chromeos/accessibility/speech_monitor.h",
         "../browser/chromeos/accessibility/touch_exploration_controller_browsertest.cc",
         "../browser/chromeos/app_mode/arc/arc_kiosk_app_manager_browsertest.cc",
         "../browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc",
         "../browser/chromeos/app_mode/kiosk_app_update_service_browsertest.cc",
         "../browser/chromeos/app_mode/kiosk_crash_restore_browsertest.cc",
         "../browser/chromeos/arc/arc_session_manager_browsertest.cc",
         "../browser/chromeos/arc/auth/arc_active_directory_enrollment_token_fetcher_browsertest.cc",
+        "../browser/chromeos/arc/auth/arc_auth_service_browsertest.cc",
         "../browser/chromeos/arc/auth/arc_robot_auth_code_fetcher_browsertest.cc",
         "../browser/chromeos/arc/intent_helper/arc_settings_service_browsertest.cc",
         "../browser/chromeos/arc/voice_interaction/arc_voice_interaction_arc_home_service_browsertest.cc",
         "../browser/chromeos/attestation/attestation_policy_browsertest.cc",
         "../browser/chromeos/customization/customization_document_browsertest.cc",
         "../browser/chromeos/customization/customization_wallpaper_downloader_browsertest.cc",
         "../browser/chromeos/device/input_service_proxy_browsertest.cc",
         "../browser/chromeos/device/input_service_test_helper.cc",
         "../browser/chromeos/device/input_service_test_helper.h",
         "../browser/chromeos/display/quirks_browsertest.cc",
@@ skipping 2989 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }