[atom/common/api/atom_api_clipboard.cc](https://github.com/electron/electron/blob/master/atom/common/api/atom_api_clipboard.cc)

See TODO in the code.

/cc @gavignus 

atom/common/api/atom_api_clipboard.cc
std::string type;
  if (args->GetNext(&type) && type == "selection")
    return ui::CLIPBOARD_TYPE_SELECTION;
  else
    return ui::CLIPBOARD_TYPE_COPY_PASTE;
}
std::vector<base::string16> Clipboard::AvailableFormats(mate::Arguments* args) {