file manager: fix alignment of checkboxes and file names in detail list

chrome/browser/resources/file_manager/css/file_manager.css

 /*
  * Copyright (c) 2011 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 frame of the dialog. */
 body {
   -webkit-box-flex: 1;
   -webkit-box-orient: vertical;
@@ skipping 212 matching lines @@
   -webkit-box-flex: 1;
   display: -webkit-box;
 }
 
 .detail-table li.table-row .table-row-cell:first-child div {
   margin: 0px;
 }
 
 .file-checkbox {
   -webkit-margin-end: 0px;
-  margin-top: 5px;
+  margin-top: 6px;
   opacity: 0.1;
 }
 
 li.thumbnail-item .file-checkbox {
   opacity: 0;
 }
 
 li.table-row:hover .file-checkbox,
 li.thumbnail-item:hover .file-checkbox {
   opacity: 0.5;
@@ skipping 151 matching lines @@
   -webkit-box-flex: 1;
   display: -webkit-box;
 }
 
 /* A vertical spring. */
 .vertical-spacer {
   -webkit-box-orient: vertical;
   -webkit-box-flex: 1;
   display: -webkit-box;
 }