Foxconn U98Z106.00 (HP)
Atheros.For a list of all currently documented Atheros chipsets with specifications, see
HP SPS # 676786-001, AS # 676690-001, Code Name: Miami
This module is used within the HP Chromebook 14 (Falco). It's visible here on this chap's imgur teardown.
It would appear the USB ID for the BT portion is 0cf3:311e. 
- Subsystem noted on this Ubuntu Forums post as 103c:1864, also shows the BT USB ID as 0cf3:311e