React to primary display change instead of removal

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 684 matching lines @@
         "../browser/chromeos/login/screenshot_testing/screenshot_testing_mixin.cc",
         "../browser/chromeos/login/screenshot_testing/screenshot_testing_mixin.h",
         "../browser/chromeos/login/test/https_forwarder.cc",
         "../browser/chromeos/login/test/https_forwarder.h",
         "../browser/chromeos/login/test/oobe_base_test.cc",
         "../browser/chromeos/login/test/oobe_base_test.h",
         "../browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc",
         "../browser/chromeos/login/users/wallpaper/wallpaper_manager_test_utils.cc",
         "../browser/chromeos/login/users/wallpaper/wallpaper_manager_test_utils.h",
         "../browser/notifications/login_state_notification_blocker_chromeos_browsertest.cc",
+        "../browser/ui/webui/chromeos/login/oobe_display_chooser_browsertest.cc",
         "data/chromeos/service_login.html",
       ]
       deps += [
         "//ash/resources",
         "//chrome/browser/media/router:test_support",
         "//chromeos",
         "//mojo/edk/system",
         "//ui/app_list/presenter:test_support",
       ]
 
@@ skipping 4409 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }