Show a 'remember me' checkbox in the web-app when connecting to a host that supports pairing.

remoting/webapp/main.css

 /* Copyright (c) 2012 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.
  */
 
 html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p,
 blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em,
 font, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, dl,
 dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody,
 tfoot, thead, tr, th, td, button {
@@ skipping 531 matching lines @@
   display: inline-block;
 }
 
 #ask-pin-form > div {
   margin-bottom: 8px;
 }
 
 .checkbox-label {
   display: block;
   padding-__MSG_@@bidi_start_edge__: 20px;
+  margin-top: 12px;
 }
 
 .checkbox-label input[type=checkbox] {
   float: __MSG_@@bidi_start_edge__;
   margin-__MSG_@@bidi_start_edge__: -20px;
   margin-__MSG_@@bidi_end_edge__: 0;
   width: 20px;
   margin-top: 2px;
 }
 
@@ skipping 74 matching lines @@
   box-sizing: border-box;
 }
 
 /*
  * Setting hidden on elements that match some rule overriding 'display' doesn't
  * do what you would expect unless this is made explicit (and !important).
  */
 [hidden] {
   display: none !important;
 }