From 8d55e5967ed4d7f03ab08cbbd034d116a10f618a Mon Sep 17 00:00:00 2001
From: Sam Macbeth <sammacbeth@users.noreply.github.com>
Date: Thu, 10 Oct 2019 10:22:35 +0200
Subject: [PATCH] Improve extraHeaders feature detection

---
 add-on/src/lib/ipfs-companion.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/add-on/src/lib/ipfs-companion.js b/add-on/src/lib/ipfs-companion.js
index ffc6f455b..074db5d05 100644
--- a/add-on/src/lib/ipfs-companion.js
+++ b/add-on/src/lib/ipfs-companion.js
@@ -97,7 +97,7 @@ module.exports = async function init () {
 
   function registerListeners () {
     const onBeforeSendInfoSpec = ['blocking', 'requestHeaders']
-    if (!runtime.isFirefox) {
+    if (browser.webRequest.OnBeforeSendHeadersOptions && 'EXTRA_HEADERS' in browser.webRequest.OnBeforeSendHeadersOptions) {
       // Chrome 72+  requires 'extraHeaders' for access to Referer header (used in cors whitelisting of webui)
       onBeforeSendInfoSpec.push('extraHeaders')
     }