[Chrome Settings UI] Show overruled User Exceptions as strike-through.

chrome/browser/resources/options/options_page.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. */
 
 body {
   position: relative;
 }
 
 #main-content {
   bottom: 0;
@@ skipping 285 matching lines @@
       url(../../../../ui/resources/default_200_percent/close_2_pressed.png)
           2x);
 }
 
 list .static-text {
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
 }
 
+list .overruled .static-text {
+  text-decoration: line-through;
+}
+
 list[type='text'][inlineeditable] input {
   box-sizing: border-box;
   margin: 0;
   width: 100%;
 }
 
 list > :not([editing]) [displaymode='edit'] {
   display: none;
 }
 
@@ skipping 129 matching lines @@
 .standalone-action-link {
   padding: 0;
 }
 
 :-webkit-any(.checkbox, .radio) label ~ a {
   display: inline-block;
   /* Matches padding of -webkit-any(.checkbox, .radio) */
   padding-bottom: 7px;
   vertical-align: bottom;
 }