/usr/src/linux-headers-4.15.0-1019-gcp/ is in linux-headers-4.15.0-1019-gcp 4.15.0-1019.20.
This file is owned by root:root, with mode 0o755.
There are a lot of files here (11137 total).
We're only showing the immediate contents of /usr/src/linux-headers-4.15.0-1019-gcp
.