Fix focusring for bookmark manager search box

chrome/browser/resources/bookmark_manager/css/bmm.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 {
   cursor: default;
   height: 100%;
   margin: 0;
   overflow: hidden;
@@ skipping 237 matching lines @@
 .header {
   min-width: 400px;
 }
 
 html[dir=rtl] .logo,
 html[dir=rtl] .header > div,
 html[dir=rtl] .header form {
   float: right;
 }
 
-input[type='search'] {
-  -webkit-appearance: textfield;
-  -webkit-margin-end: 2px;
-  -webkit-margin-start: 2px;
-  width: 100%;
-}
-
 #drop-overlay {
   background-color: hsla(214, 91%, 85%, .5);
   border: 1px solid hsl(214, 91%, 85%);
   border-radius: 3px;
   box-sizing: border-box;
   display: none;
   overflow: hidden;
   pointer-events: none;
   position: absolute;
   z-index: -1;
@@ skipping 33 matching lines @@
   background: transparent;
   border: 0;
   font: inherit;
   padding-bottom: 0;
   padding-top: 0;
 }
 
 html[dir=rtl] .summary button {
   background-position: top middle;
 }