add_to_homescreen_installer.cc

void AddToHomescreenInstaller::Install(
    content::WebContents* web_contents,
    const AddToHomescreenParams& params,
    const base::RepeatingCallback<void(Event, const AddToHomescreenParams&)>&
        event_callback) {
  if (!web_contents) {
    event_callback.Run(Event::INSTALL_FAILED, params);
    return;
  }

  event_callback.Run(Event::INSTALL_STARTED, params);
  switch (params.app_type) {
    case AddToHomescreenParams::AppType::NATIVE:
      InstallOrOpenNativeApp(web_contents, params, event_callback);
      break;
    case AddToHomescreenParams::AppType::WEBAPK:
      WebappsClient::Get()->InstallWebApk(web_contents, params);
      break;
    case AddToHomescreenParams::AppType::SHORTCUT:
      WebappsClient::Get()->InstallShortcut(web_contents, params);
      break;
  }
  event_callback.Run(Event::INSTALL_REQUEST_FINISHED, params);
}