chromium support

popup.js

@@ -1,6 +1,8 @@
 (function () {
   "use strict";
 
+  const api = typeof browser === "object" ? browser : chrome;
+
   const status = document.getElementById("status");
   const toggle = document.getElementById("toggle");
   const fontStyleInputs = [...document.querySelectorAll('input[name="font-style"]')];
@@ -39,11 +41,11 @@
     toggle.disabled = true;
     toggle.setAttribute("aria-pressed", "false");
     toggle.textContent = "Unavailable on this page";
-    status.textContent = "Firefox protects this page from extensions.";
+    status.textContent = "The browser protects this page from extensions.";
   }
 
   async function askBackground(type, extra = {}) {
-    return browser.runtime.sendMessage({ type, ...extra });
+    return api.runtime.sendMessage({ type, ...extra });
   }
 
   toggle.addEventListener("click", async () => {
@@ -104,7 +106,7 @@
 
   async function initialize() {
     try {
-      const tabs = await browser.tabs.query({ active: true, currentWindow: true });
+      const tabs = await api.tabs.query({ active: true, currentWindow: true });
       if (!tabs[0] || typeof tabs[0].id !== "number") {
         showUnavailable();
         return;