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

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 425 matching lines @@
 html:not([hasFlashPlugin]) .flash-plugin-area,
 /* If the Flash plug-in supports the NPP_ClearSiteData API, we don't need to
  * show the link to the Flash storage settings manager:
  */
 html[flashPluginSupportsClearSiteData] .flash-plugin-area,
 html:not([flashPluginSupportsClearSiteData]) .clear-plugin-lso-data-enabled,
 html[flashPluginSupportsClearSiteData] .clear-plugin-lso-data-disabled,
 html:not([enablePepperFlashSettings]) .pepper-flash-settings {
   display: none;
 }
+
+.standalone-action-link {
+  padding: 0;
+}