Create OOBE screen for Waiting for Container ready

chrome/browser/resources/chromeos/login/oobe_wait_for_container_ready.css

+/* 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. */
+
+.header {
+  margin-top: 15px;
+}
+
+.subtitle {
+  line-height: 20px;
+}
+
+paper-progress {
+  --paper-progress-active-color: rgb(66, 133, 244);
+  --paper-progress-container-color: #e6e6e6;
+  --paper-progress-secondary-color: rgb(66, 133, 244);
+  display: block;
+  padding: 48px 0 0 0;
+  width: 100%;
+}