Issue 5028 - Use browser namespace

options.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 "use strict";
 
+// Both Edge and Mozilla Web Extensions use the namespace

[Manish Jethani, 2017/10/09 15:49:41]

This is a duplication of Ollie's change, will be merged.

[Sebastian Noack, 2017/10/09 16:05:37]

See my comment on Ollie's review. I don't think we should duplicate that
fallback here, but create a desperate file like polyfill.js.

[Manish Jethani, 2017/10/09 16:08:38]

Yes, so I think I can do it as part of this change, since it's related. Ollie
could go ahead a commit that one.

[Sebastian Noack, 2017/10/09 16:14:19]

s/desperate/separate/
Fine with me addressing it in here, and then dropping Ollie's patch.

[Manish Jethani, 2017/10/11 10:59:18]

Done.

+// 'browser' instead of 'chrome'. Edge has chrome namespace defined,
+// in some cases, but only with one property: 'app'.
+if (typeof browser == "undefined" ||
+    typeof chrome != "undefined" && typeof chrome.extension != "undefined")
+  window.browser = chrome;
+
 let iframe = document.getElementById("content");
 
 iframe.onload = () =>
 {
   document.title = iframe.contentDocument.title;
 };
 
-chrome.runtime.sendMessage({
+browser.runtime.sendMessage({
   type: "app.get",
   what: "application"
 },
 application =>
 {
   // Load the mobile version of the options page on Firefox for Android.
   iframe.src = iframe.getAttribute("data-src-" + application) ||
                iframe.getAttribute("data-src");
 });