From b2947aede0f09c3421c2274e4bf6091ae4228d5e Mon Sep 17 00:00:00 2001
From: Abe Jellinek <jellinek@berkeley.edu>
Date: Fri, 14 Apr 2023 11:27:09 -0400
Subject: [PATCH] fx-compat: Fix attaching CookieSandbox to a browser

---
 chrome/content/zotero/xpcom/cookieSandbox.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/chrome/content/zotero/xpcom/cookieSandbox.js b/chrome/content/zotero/xpcom/cookieSandbox.js
index 7b974e9304..6848681a9b 100755
--- a/chrome/content/zotero/xpcom/cookieSandbox.js
+++ b/chrome/content/zotero/xpcom/cookieSandbox.js
@@ -336,8 +336,7 @@ Zotero.CookieSandbox.Observer = new function() {
 			} else {
 				// try the browser
 				try {
-					browser = notificationCallbacks.getInterface(Ci.nsIWebNavigation)
-						.QueryInterface(Ci.nsIDocShell).chromeEventHandler;
+					browser = notificationCallbacks.getInterface(Ci.nsILoadContext).topFrameElement;
 				} catch(e) {}
 				if(browser) {
 					tested = true;