root/chrome/browser/extensions/api/signed_in_devices/

[..]
  1. id_mapping_helper.cc
  2. id_mapping_helper.h
  3. id_mapping_helper_unittest.cc
  4. signed_in_devices_api.cc
  5. signed_in_devices_api.h
  6. signed_in_devices_api_unittest.cc
  7. signed_in_devices_manager.cc
  8. signed_in_devices_manager.h
  9. signed_in_devices_manager_unittest.cc
[..]