Modify ContentProfileFileName enum

According to protobuf best practices, this CL does the following:
- Add 'BLUETOOTH_FILE_NAME_UNKNOWN' as value zero
- Unify the prefix

Bug: 312269095
Bug: 294797589
Bug: 317002318
Test: m -j;
Change-Id: I6a1ce5de02f19b36aca54e3d2208b6e11408ba5d
1 file changed
tree: b1a788fa72575a67d07724936596e26f99d9caf7
  1. stats/
  2. OWNERS