CancelIO          394 net/disk_cache/blockfile/entry_impl.cc   sparse_->CancelIO();
CancelIO          693 net/disk_cache/blockfile/entry_impl_v3.cc   sparse_->CancelIO();
CancelIO           69 net/disk_cache/blockfile/sparse_control.h   void CancelIO();
CancelIO           64 net/disk_cache/blockfile/sparse_control_v3.h   void CancelIO();