FILTER_EXISTS     275 chrome/browser/download/download_query.cc     case FILTER_EXISTS:
FILTER_EXISTS     367 chrome/browser/download/download_query_unittest.cc   AddFilter(DownloadQuery::FILTER_EXISTS, true);
FILTER_EXISTS     356 chrome/browser/extensions/api/downloads/downloads_api.cc   filter_types[kExistsKey] = DownloadQuery::FILTER_EXISTS;