1 files changed, 21 insertions, 0 deletions
diff --git a/dom/u2f/tests/browser/head.js b/dom/u2f/tests/browser/head.js
new file mode 100644
index 0000000000..ba79b94853
--- /dev/null
+++ b/dom/u2f/tests/browser/head.js
@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+function bytesToBase64(u8a) {
+  let CHUNK_SZ = 0x8000;
+  let c = [];
+  for (let i = 0; i < u8a.length; i += CHUNK_SZ) {
+    c.push(String.fromCharCode.apply(null, u8a.subarray(i, i + CHUNK_SZ)));
+  }
+  return window.btoa(c.join(""));
+}
+
+function bytesToBase64UrlSafe(buf) {
+  return bytesToBase64(buf)
+    .replace(/\+/g, "-")
+    .replace(/\//g, "_")
+    .replace(/=/g, "");
+}