252   chunkIndex(chunks) {  argument
254     for (let i = 0; i < chunks.length; i++) {
255       let chunk = chunks[i];
263   position(chunks) {  argument
264     let index = this.chunkIndex(chunks);
266     let yFrom = kChunkHeight - chunks[index].yOffset(this);
339   chunkIndex(chunks) {  argument
341     for (let i = 0; i < chunks.length; i++) {
342       let chunk = chunks[i];
518     let chunks = [];
519     this.forEachChunkSize(count, (start, end) => chunks.push(end - start));
520     return chunks;
523   chunks(count) {  method in Timeline
524     let chunks = [];
529       chunks.push(new Chunk(chunks.length, startTime, endTime, items, markers));
531     return chunks;
646   next(chunks) {  argument
647     return this.findChunk(chunks, 1);
650   prev(chunks) {  argument
651     return this.findChunk(chunks, -1);
654   findChunk(chunks, delta) {  argument
656     let chunk = chunks[i];
659       chunk = chunks[i]