Removed user agent code

Author: Muhammad Usman

package/src/frontend/browser/Agent.js

@@ -48,11 +48,6 @@ export const Agent = function(userAgent) {
              !matches(/Chrome/i);
     },
 
-    matchesChrome: function() {
-      return matches(/Chrome/i) &&
-             !matches(/Chromium/i) ;
-    },
-
     /**
      * Returns true on iOS Safari.
      * @return {boolean}