[uber page] Fix font for link-buttons.

chrome/browser/resources/shared/css/button.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.
  */
 
 button:not(.custom-appearance):not(.link-button),
 input[type='button']:not(.custom-appearance):not(.link-button),
 input[type='submit']:not(.custom-appearance):not(.link-button) {
   -webkit-border-radius: 3px;
   -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
@@ skipping 61 matching lines @@
   outline-color: rgb(64, 128, 250);
 }
 
 .link-button,
 .link-button:focus {
   -webkit-box-shadow: none;
   background: transparent none;
   border: none;
   color: rgb(17, 85, 204);
   cursor: pointer;
+  /* Input elements have -webkit-small-control which can override the body font.
+   * Resolve this by using 'inherit'. */
+  font: inherit;
   margin: 0;
   padding: 0 4px;
 }
 
 .link-button:hover {
   text-decoration: underline;
 }
 
 .link-button:active {
   color: rgb(5, 37, 119);
   text-decoration: underline;
 }