Google appears to have a cross-platform local file sharing service on the way. Dubbed Copresence, the upcoming offering will reportedly be a cross between Apple AirDrop and Android Beam.
Copresence will allow iOS and Android users to exchange a files, messages, photos, and directions among others. Google is purportedly set to add functionality to the service, which goes beyond exchange of files and information.
Device authentication is said to take place over Bluetooth. File transfers will happen through Wi-Fi or Wi-Fi Direct. The images you see have been extracted from the latest Google Play Services APK. Copresence API for Chrome has appeared in developer documentation as well. The service will be officially revealed on the upcoming weeks.