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diff --git a/src/js/firefoxandroid.js b/src/js/firefoxandroid.js
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+++ b/src/js/firefoxandroid.js
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+/*
+ * This file is part of Privacy Badger <https://www.eff.org/privacybadger>
+ * Copyright (C) 2014 Electronic Frontier Foundation
+ *
+ * Privacy Badger 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.
+ *
+ * Privacy Badger 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 Privacy Badger.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Temporary polyfill for firefox android,
+ * while it doesn't support the full browserAction API
+ * Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1330159
+ */
+
+require.scopes.firefoxandroid = (function() {
+var hasPopupSupport = !!(
+  chrome.browserAction.setPopup &&
+  chrome.browserAction.getPopup
+);
+var hasBadgeSupport = !!chrome.browserAction.setBadgeText;
+
+// keeps track of popup id while one is open
+var openPopupId = false;
+var popup_url = chrome.runtime.getManifest().browser_action.default_popup;
+
+// fakes a popup
+function openPopup() {
+  chrome.tabs.query({active: true, lastFocusedWindow: true}, (tabs) => {
+    var url = popup_url + "?tabId=" + tabs[0].id;
+    chrome.tabs.create({url, index: tabs[0].index + 1}, (tab) => {
+      openPopupId = tab.id;
+    });
+  });
+}
+
+// remove the 'popup' when another tab is activated
+function onActivated(activeInfo) {
+  if (openPopupId != false && openPopupId != activeInfo.tabId) {
+    chrome.tabs.remove(openPopupId, () => {
+      openPopupId = false;
+    });
+  }
+}
+
+// forgets the popup when the url is overwritten by the user
+function onUpdated(tabId, changeInfo, tab) {
+  if (tab.url && openPopupId == tabId) {
+    var new_url = new URL(tab.url);
+
+    if (new_url.origin + new_url.pathname != popup_url) {
+      openPopupId = false;
+    }
+  }
+}
+
+// Subscribe to events needed to fake a popup
+function startListeners() {
+  if (!hasPopupSupport) {
+    chrome.browserAction.onClicked.addListener(openPopup);
+    chrome.tabs.onActivated.addListener(onActivated);
+    chrome.tabs.onUpdated.addListener(onUpdated);
+  }
+}
+
+// Used in popup.js, figures out which tab opened the 'fake' popup
+function getParentOfPopup(callback) {
+  chrome.tabs.query({active: true, currentWindow: true}, function(focusedTab) {
+    var parentId = parseInt(new URL(focusedTab[0].url).searchParams.get('tabId'));
+    chrome.tabs.get(parentId, callback);
+  });
+}
+
+/************************************** exports */
+var exports = {};
+exports.startListeners = startListeners;
+exports.hasPopupSupport = hasPopupSupport;
+exports.hasBadgeSupport = hasBadgeSupport;
+exports.getParentOfPopup = getParentOfPopup;
+return exports;
+/************************************** exports */
+})();