Add <a is="action-link">, a web component extension of <a> for in-page actions.

chrome/browser/resources/print_preview/print_preview.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 {
   height: 100%;
   overflow: hidden;
 }
 
 body {
@@ skipping 298 matching lines @@
   -webkit-box-flex: 1;
   -webkit-box-orient: vertical;
   display: -webkit-box;
   height: 100%;
   position: relative;
 }
 
 html:not(.focus-outline-visible)
 :enabled:focus:-webkit-any(input[type='checkbox'],
                            input[type='radio'],
-                           button):not(.link-button) {
+                           button) {
   /* Cancel border-color for :focus specified in widgets.css. */
   border-color: rgba(0,0,0,0.25);
 }
 
-html:not(.focus-outline-visible) button:focus.link-button {
+html:not(.focus-outline-visible) [is='action-link']:focus {
   outline: none;
 }