Implemented UI for the meetings controller out-of-box.

ui/login/screen_container.css

 /* 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.
  */
 
 #outer-container {
   -webkit-box-align: center;
   -webkit-box-pack: center;
   -webkit-perspective: 1px; /* Workaround, see http://crbug.com/360567 */
   bottom: 51px;  /* Leave space for the header bar */
@@ skipping 147 matching lines @@
 #oobe.eula #eula-dot,
 #oobe.gaia-signin #gaia-signin-dot,
 #oobe.oauth-enrollment #gaia-signin-dot,
 #oobe.oauth-enrollment #signin-dot,
 #oobe.signin #signin-dot,
 #oobe.update #update-dot,
 #oobe.user-image #user-image-dot {
   opacity: 1;
 }
 
-#oobe.reset #progress-dots {
+#oobe.reset #progress-dots,
+#oobe.host-pairing #progress-dots,
+#oobe.controller-pairing #progress-dots {
   visibility: hidden;
 }
 
 body:not(.oobe-display) #inner-container {
   height: 262px;
   padding: 0;
   width: 1100px;
 }
 
 body:not(.oobe-display) #progress-dots {
@@ skipping 24 matching lines @@
   line-height: 31px;
   text-transform: lowercase;
   width: 23em;
 }
 
 .header-section::before {
   /* Divider in header between product name and title,
    * like "[Product name] > [step header]". */
   content: '\00A0\203A\00A0\00A0';
 }