Merge pull request #340 from bgrozev/fix-simulcast-support-check

fix: Use the same logic as sdp-simulcast in

modules/RTC/RTCBrowserType.js

      * @returns {boolean}
      */
     supportsSimulcast: function() {
-        return RTCBrowserType.isChrome();
+        // This mirrors what sdp-simulcast uses (which is used when deciding
+        // whether to actually enable simulcast or not).
+        // TODO: the logic should be in one single place.
+        return !!window.chrome;
     }
 
     // Add version getters for other browsers when needed

modules/connectivity/ConnectionQuality.js

 
         /**
          * Whether simulcast is supported. Note that even if supported, it is
-         * currently not used for screensharing, which is why we have an
-         * additional check.
+         * currently not used for screensharing.
          */
         this._simulcast
             = !options.disableSimulcast && RTCBrowserType.supportsSimulcast();