test/trace_processor/heap_graph_flamegraph_focused.out

"id","depth","name","count","cumulative_count","size","cumulative_size","parent_id"
0,0,"RootNode",1,3,100,700,"[NULL]"
1,1,"LeftChild0",1,2,200,600,0
2,2,"LeftChild1",1,1,400,400,1