History: Fix alignment issue with 'x' buttons on Android.

chrome/browser/resources/history/history_mobile.css

 /* Copyright (c) 2013 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. */
 
 /* This file contains styles specific to Android and iOS. */
 
 body {
   color: rgb(76, 76, 76);
   margin: 0;
   margin-bottom: 46px;
@@ skipping 106 matching lines @@
   margin-bottom: 0;
   margin-top: 0;
   padding-bottom: 0;
 }
 
 h3,
 .entry,
 #search-field {
   border-bottom: 1px solid rgb(220, 220, 220);
   border-top: 1px solid rgb(220, 220, 220);
+  display: block;
   margin-bottom: -1px;
   overflow: hidden;
 }
 
 .entry-box,
 #search-field,
 #results-pagination button {
   height: 60px;
 }
 
@@ skipping 100 matching lines @@
 
 h1,
 #notification-bar,
 #loading-spinner,
 .no-results-message {
   padding-left: 0;
   padding-right: 0;
 }
 
 } /* @media only screen and (max-width:720px) */