[Password Manager] Add link to remotely manage passowrds on desktop

chrome/browser/resources/options/autofill_options.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. */
 
 #autofill-options {
   width: 550px;
 }
 
-#autofill-help {
-  bottom: 18px;
-  position: absolute;
-}
-
 #autofill-options list {
   min-height: 172px;
 }
 
 .autofill-list-item {
   -webkit-box-flex: 1;
   -webkit-padding-start: 8px;
   overflow: hidden;
   text-overflow: ellipsis;
 }
@@ skipping 19 matching lines @@
 
 #autofill-options .list-inline-button {
   margin-top: 0;
   vertical-align: top;
 }
 
 #autofill-options div[role='listitem']:not(:hover):not([selected])
     .list-inline-button {
   display: none;
 }
+
+#spacer-div {
+  -webkit-box-flex: 1;
+}