Google today sent notice of a special event at its Mountain View campus on Thursday to unveil a "couple of cool new mobile features" that may bring video calling to Android. While the company has so far only said that mobile product lead Hugo Barra will lead the event, sources suggested Tuesday night that it may be video chat integrated with the mobile OS. A second option raised by AllThingsD may be a clone of Find My iPhone that would help Android owners track, lock down or wipe a lost handset.