Merge pull request #1818 from jitsi/tavram/safari

fix(browser-capabilities) expose supported mobile browsers

modules/browser/BrowserCapabilities.js

 /* Minimum required Chrome / Chromium version. This applies also to derivatives. */
 const MIN_REQUIRED_CHROME_VERSION = 72;
 const MIN_REQUIRED_SAFARI_VERSION = 14;
+const MIN_REQUIRED_IOS_VERSION = 14;
 
 // TODO: Move this code to js-utils.
 
             || this.isWebKitBased();
     }
 
+    /**
+     * Returns whether the browser is supported for Android
+     * @returns {boolean} true if the browser is supported for Android devices
+     */
+    isSupportedAndroidBrowser() {
+        return this.isChromiumBased() || this.isFirefox();
+    }
+
+    /**
+     * Returns whether the browser is supported for iOS
+     * @returns {boolean} true if the browser is supported for iOS devices
+     */
+    isSupportedIOSBrowser() {
+        return this._getIOSVersion() >= MIN_REQUIRED_IOS_VERSION;
+    }
+
     /**
      * Returns whether or not the current environment needs a user interaction
      * with the page before any unmute can occur.
 
         return -1;
     }
+
+    /**
+     * Returns the version of an ios browser.
+     *
+     * @returns {Number}
+     */
+    _getIOSVersion() {
+        if (this.isWebKitBased()) {
+            return Number.parseInt(this.getVersion(), 10);
+        }
+
+        return -1;
+    }
 }