Chrome OS is available for download.

Source codes: build.chromium.org/buildbot/archives/chromium.r32502.tgz (803 Mb)

Assembly Instructions
')
UPD:
Image for VMware:
thepiratebay.org/torrent/5170843
chromeos-images.s3.amazonaws.com/chromeos-image-999.999.32309.211410-a1.vmdk.bz2

Source: https://habr.com/ru/post/75820/