root/chrome/browser/extensions/api/system_storage/

1. storage_api_test_util.cc
2. storage_api_test_util.h
3. storage_info_provider.cc
4. storage_info_provider.h
5. system_storage_api.cc
6. system_storage_api.h
7. system_storage_apitest.cc
8. system_storage_eject_apitest.cc