GetDeviceTaskHelper   52 chrome/browser/media_galleries/linux/mtp_device_delegate_impl_linux.cc   return MTPDeviceTaskHelperMapService::GetInstance()->GetDeviceTaskHelper(
GetDeviceTaskHelper   34 chrome/browser/media_galleries/linux/mtp_device_task_helper_map_service.h   MTPDeviceTaskHelper* GetDeviceTaskHelper(const std::string& storage_name);