Basic keyboard access for recently_closed menu on NTP (re-work).

chrome/browser/resources/ntp4/footer_menu.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. */
 
 .footer-menu-button {
   -webkit-appearance: none;
   -webkit-padding-end: 15px;
   -webkit-padding-start: 9px;
   -webkit-transition: opacity 200ms;
   -webkit-transition-delay: 100ms;
@@ skipping 62 matching lines @@
   -webkit-padding-start: 22px;
   background: no-repeat 0 50%;
   background-color: transparent !important;
   background-size: 16px 16px;
   box-sizing: border-box;
   display: block;
   line-height: 1.5em;
   margin-bottom: 0.5em;
   margin-top: 0.5em;
   max-width: 450px;
+  outline: none;

[Dan Beam, 2012/11/12 22:55:03]

thank you for these changes, this looks a lot better to me

   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
 }
 
-.footer-menu-item:not(:hover) {
+.footer-menu-item:not(:hover),
+.footer-menu-item:not(:focus) {
   text-decoration: none;
 }
 
+.footer-menu-item:hover,
+.footer-menu-item:focus {
+  text-decoration: underline;
+}
+
 .footer-menu-item:first-of-type {
   margin-top: 0.25em;
 }
 
 .footer-menu-item:last-of-type {
   margin-bottom: 0.25em;
 }
 
 .footer-menu section {
   padding: 0;
@@ skipping 49 matching lines @@
 .footer-menu-context-menu {
   /* Needs to be above .footer-menu. */
   z-index: 11;
 }
 
 .footer-menu hr {
   background-color: rgb(217, 217, 217);
   border: 0;
   height: 1px;
 }