Addition: expose .toJSON() on GeolocationPosition

Author: marcoscaceres

index.html

@@ -1029,6 +1029,7 @@ <h2>
         interface GeolocationPosition {
           readonly attribute GeolocationCoordinates coords;
           readonly attribute EpochTimeStamp timestamp;
+          [Default] object toJSON(); 
         };
       </pre>
       <section>