Remove gray background for non-focused selected list items on autofillEditAddress page.

chrome/browser/resources/options/autofill_edit_overlay.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-edit-address-overlay {
   min-width: 55em;
 }
 
 #autofill-edit-credit-card-overlay {
   min-width: 500px;
@@ skipping 30 matching lines @@
   border: 1px solid darkGray;
   border-radius: 2px;
   /* Border should go "inside" the height. */
   box-sizing: border-box;
   /* Set the line-height and min-height to match the height of an input element,
    * so that even empty cells renderer with the correct height. */
   height: 2em;
   line-height: 2em;
 }
 
+#autofill-edit-address-overlay list:not([has-element-focus]) >
+    [selected]:not(:hover) {
+  background-color: transparent;
+}
+
+#autofill-edit-address-overlay list:not([has-element-focus]) > *:not(:hover)
+    .row-delete-button {
+  opacity: 0;
+  pointer-events: none;
+}
+
 :-webkit-any(#autofill-edit-credit-card-overlay, #autofill-edit-address-overlay)
     .settings-row label > :-webkit-any(input, select, textarea, list) {
   margin-top: 4px;
 }
 
 .input-group > * {
   -webkit-box-orient: vertical;
   -webkit-margin-end: 2px;
   display: -webkit-inline-box;
   vertical-align: top;
 }
 
 #autofill-edit-credit-card-overlay .content-area > *:first-child {
   margin-top: 0;
 }