ChromeOS: This CL moves chromeos/login/user_names* to user_mananger.

chromeos/login/auth/login_performer.cc

Index: chromeos/login/auth/login_performer.cc
diff --git a/chromeos/login/auth/login_performer.cc b/chromeos/login/auth/login_performer.cc
index f33d5ac984ce4183c7c8e39a41a4afe5805fa46e..d99a6f2ed3cb828049e02e4e6add58dcf0bc1bff 100644
--- a/chromeos/login/auth/login_performer.cc
+++ b/chromeos/login/auth/login_performer.cc
@@ -16,11 +16,11 @@
 #include "base/threading/thread_task_runner_handle.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/session_manager_client.h"
-#include "chromeos/login/user_names.h"
 #include "chromeos/login_event_recorder.h"
 #include "chromeos/settings/cros_settings_names.h"
 #include "components/prefs/pref_service.h"
 #include "components/signin/core/account_id/account_id.h"
+#include "components/user_manager/user_names.h"
 #include "google_apis/gaia/gaia_auth_util.h"
 #include "net/cookies/cookie_monster.h"
 #include "net/cookies/cookie_store.h"
@@ -163,7 +163,7 @@ void LoginPerformer::DoPerformLogin(const UserContext& user_context,
 
 void LoginPerformer::LoginAsSupervisedUser(const UserContext& user_context) {
   DCHECK_EQ(
-      chromeos::login::kSupervisedUserDomain,
+      user_manager::kSupervisedUserDomain,
       gaia::ExtractDomainName(user_context.GetAccountId().GetUserEmail()));
 
   user_context_ = user_context;