ipdl,

PContent.ipdl

child:

    GeolocationUpdate(GeoPosition somewhere);

    GeolocationError(uint16_t errorCode);

parent:

    AddGeolocationListener(Principal principal, bool highAccuracy);
    RemoveGeolocationListener();
    SetGeolocationHigherAccuracy(bool enable);

webidl:

./gecko/dom/webidl/Geolocation.webidl

./gecko/dom/webidl/Position.webidl

webidl 實現

gecko/dom/geolocation$ grep -inr getCurrentPosition