cros: Move ash/login/views to ash/login/ui

ash/login/views/lock_screen.cc

Index: ash/login/views/lock_screen.cc
diff --git a/ash/login/views/lock_screen.cc b/ash/login/views/lock_screen.cc
deleted file mode 100644
index 44bd17d34359841a22db225133cef2880abddc8b..0000000000000000000000000000000000000000
--- a/ash/login/views/lock_screen.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright 2017 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.
-
-#include "ash/login/views/lock_screen.h"
-
-#include "ash/login/views/lock_contents_view.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-
-void ShowLockScreenInWidget(views::Widget* widget) {
-  views::View* contents = new LockContentsView();
-  widget->SetContentsView(contents);
-  widget->Show();
-}
-
-}  // namespace ash