[Refactor] Move login screen APIs into common subdirectory

This CL moves the two existing login screen APIs into a common
subdirectory. This directory will also contain shared code that will be
utilized by each API's tests.

Bug: none
Change-Id: I91016dcd5fb3e19564c5e04d8dc41f0a34ed697f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1675652
Reviewed-by: Devlin <[email protected]>
Reviewed-by: Colin Blundell <[email protected]>
Commit-Queue: Alexander Hendrich <[email protected]>
Cr-Commit-Position: refs/heads/master@{#672902}
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index b324e82..4701f16 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -244,7 +244,7 @@
 #include "chrome/browser/chromeos/cryptauth/cryptauth_device_id_provider_impl.h"
 #include "chrome/browser/chromeos/customization/customization_document.h"
 #include "chrome/browser/chromeos/extensions/echo_private_api.h"
-#include "chrome/browser/chromeos/extensions/login/login_api.h"
+#include "chrome/browser/chromeos/extensions/login_screen/login/login_api.h"
 #include "chrome/browser/chromeos/file_system_provider/registry.h"
 #include "chrome/browser/chromeos/first_run/first_run.h"
 #include "chrome/browser/chromeos/lock_screen_apps/state_controller.h"