Restore outline on focus for security warnings

chrome/browser/resources/security_warnings/interstitial_v2.css

 /* Copyright 2014 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. */
 
 a {
   color: #585858;
 }
 
 body {
   background-color: #f7f7f7;
@@ skipping 10 matching lines @@
   background: rgb(76, 142, 250);
   border: 0;
   border-radius: 2px;
   box-sizing: border-box;
   color: #fff;
   cursor: pointer;
   float: right;
   font-size: .875em;
   height: 36px;
   margin: -6px 0 0;
-  outline: 0;
   padding: 8px 24px;
   transition: box-shadow 200ms cubic-bezier(0.4, 0, 0.2, 1);
 }
 
 [dir='rtl'] button {
   float: left;
 }
 
 button:active {
   background: rgb(50, 102, 213);
+  outline: 0;
 }
 
 button:hover {
   box-shadow: 0 1px 3px rgba(0, 0, 0, .50);
 }
 
 #details {
   color: #696969;
   margin: 45px 0 50px;
 }
@@ skipping 138 matching lines @@
   position: absolute;
   top: 3px;
   transform: rotate(-45deg);
   width: 9px;
 }
 
 .styled-checkbox input[type=checkbox]:checked + label::after {
   opacity: 1;
 }
 
-.yellow :-webkit-any(
-    a, #details, #details-button, h1, .small-link) {
-  color: black;
-}
-
 @media (max-width: 700px) {
   .interstitial-wrapper {
     padding: 0 10%;
   }
 }
 
 @media (max-height: 600px) {
   .interstitial-wrapper {
     margin-top: 13%;
   }
@@ skipping 31 matching lines @@
   }
 
   .nav-wrapper {
     margin-top: 30px;
   }
 
   .small-link {
     font-size: 1em;
   }
 }