constructor(connection, segmentStore, manifestStore) {
    /** @protected {!shaka.offline.indexeddb.DBConnection} */
    this.connection_ = new shaka.offline.indexeddb.DBConnection(connection);

    /** @protected {string} */
    this.segmentStore_ = segmentStore;

    /** @protected {string} */
    this.manifestStore_ = manifestStore;
  }
@param {IDBDatabase} connection
@param {string} segmentStore
@param {string} manifestStore