1 files changed, 21 insertions, 0 deletions
diff --git a/tools/quitter/contentscript.js b/tools/quitter/contentscript.js
new file mode 100644
index 0000000000..b0cfc70313
--- /dev/null
+++ b/tools/quitter/contentscript.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";
+
+/* eslint-env webextensions */
+
+const Quitter = {
+  async quit() {
+    // This can be called before the background page has loaded,
+    // so we need to wait for it.
+    browser.runtime.sendMessage("quit").catch(() => {
+      setTimeout(Quitter.quit, 100);
+    });
+  },
+};
+
+window.wrappedJSObject.Quitter = cloneInto(Quitter, window, {
+  cloneFunctions: true,
+});