MD Downloads: preload bold Roboto in a better way

chrome/browser/resources/md_downloads/crisper.js

Index: chrome/browser/resources/md_downloads/crisper.js
diff --git a/chrome/browser/resources/md_downloads/crisper.js b/chrome/browser/resources/md_downloads/crisper.js
index 6cb4e37f57b505136c54c6747f533e8dab113823..4224da8effa958b556ddac2aab4fc483aee480ab 100644
--- a/chrome/browser/resources/md_downloads/crisper.js
+++ b/chrome/browser/resources/md_downloads/crisper.js
@@ -6996,4 +6996,11 @@ cr.define('downloads', function() {
 // Copyright 2015 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.
-window.addEventListener('load', downloads.Manager.onLoad);
+window.addEventListener('load', function() {
+  downloads.Manager.onLoad();
+  if (!cr.isChromeOS) {
+    new FontFace('Roboto', "local('Roboto Bold'), local('Roboto-Bold'), " + "url(chrome://resources/roboto/roboto-bold.woff2) format('woff2')", {
+      weight: 'bold'
+    }).load();
+  }
+});