feat(DeepLinkingMobilePage): Add dynamic links support.

react/features/deep-linking/components/DeepLinkingMobilePage.js

-/* @flow */
+// @flow
 
 import PropTypes from 'prop-types';
 import React, { Component } from 'react';
  * @type {Array<string>}
  */
 const _URLS = {
-    android: interfaceConfig.MOBILE_DOWNLOAD_LINK_ANDROID
-        || 'https://play.google.com/store/apps/details?id=org.jitsi.meet',
+    android: interfaceConfig.MOBILE_DOWNLOAD_LINK_ANDROID,
     ios: interfaceConfig.MOBILE_DOWNLOAD_LINK_IOS
-        || 'https://itunes.apple.com/us/app/jitsi-meet/id1165103905'
 };
 
 /**
                         }
                     </p>
                     <a
-                        href = { _URLS[Platform.OS] }
+                        href = { this._generateDownloadURL() }
                         onClick = { this._onDownloadApp } >
                         <button className = { downloadButtonClassName }>
                             { t(`${_TNS}.downloadApp`) }
         );
     }
 
+    /**
+     * Generates the URL for downloading the app.
+     *
+     * @private
+     * @returns {string} - The URL for downloading the app.
+     */
+    _generateDownloadURL() {
+        const url = _URLS[Platform.OS];
+
+        if (url) {
+            return url;
+        }
+
+        // For information about the properties of
+        // interfaceConfig.MOBILE_DYNAMIC_LINK check:
+        // https://firebase.google.com/docs/dynamic-links/create-manually
+        const {
+            APN = 'org.jitsi.meet',
+            APP_CODE = 'w2atb',
+            IBI = 'com.atlassian.JitsiMeet.ios',
+            ISI = '1165103905'
+        } = interfaceConfig.MOBILE_DYNAMIC_LINK || {};
+        const IUS = interfaceConfig.APP_SCHEME || 'org.jitsi.meet';
+
+        return `https://${APP_CODE}.app.goo.gl/?link=${
+            encodeURIComponent(window.location.href)}&apn=${
+            APN}&ibi=${
+            IBI}&isi=${
+            ISI}&ius=${
+            IUS}&efr=1`;
+    }
+
     _onDownloadApp: () => {};
 
     /**
      * Handles download app button clicks.
      *
+     * @private
      * @returns {void}
      */
     _onDownloadApp() {
     /**
      * Handles open app button clicks.
      *
+     * @private
      * @returns {void}
      */
     _onOpenApp() {