[File Manager] Fixed cursor style for Learn More link

chrome/browser/resources/file_manager/css/file_manager.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.col-resize * {
   cursor: col-resize !important;
 }
 
 /* Outer frame of the dialog. */
 body {
@@ skipping 1137 matching lines @@
 
 .unmounted-panel:not([loading]) > .gdata.loading,
 .unmounted-panel:not([error]) > .gdata.error,
 .unmounted-panel:not([retry]) > .gdata.retry,
 .unmounted-panel:not([retry]) > .gdata.learn-more {
   display: none;
 }
 
 .plain-link {
   color: rgb(17, 85, 204);
-  cursor: default;
+  cursor: pointer;
 }
 
 body[ash] .dialog-title,
 body[type='full-page'] [invisibleif='full-page'],
 body:not([type='full-page']) [visibleif='full-page'],
 body:not([type='saveas-file']) [visibleif='saveas-file'],
 body:not([type='saveas-file']):not([type='full-page'])
     [visibleif='saveas-file full-page'] {
   display: none;
 }