root/chrome/browser/extensions/api/music_manager_private/

1. device_id.cc
2. device_id.h
3. device_id_chromeos.cc
4. device_id_linux.cc
5. device_id_mac.cc
6. device_id_win.cc
7. music_manager_private_api.cc
8. music_manager_private_api.h
9. music_manager_private_browsertest.cc