kSparseRead       364 net/disk_cache/blockfile/entry_impl.cc   ReportIOTime(kSparseRead, start);
kSparseRead       705 net/disk_cache/blockfile/entry_impl.cc     case kSparseRead:
kSparseRead       628 net/disk_cache/blockfile/entry_impl_v3.cc   ReportIOTime(kSparseRead, start);
kSparseRead      1373 net/disk_cache/blockfile/entry_impl_v3.cc     case kSparseRead: