If you want, I can:
Google does not officially package a "portable" version in a single EXE, but the community-trusted site PortableApps.com provides a clean, safe wrapper for the official Chrome binaries.
You can "trick" the portable installer into working offline by following these steps:
A standard web installer downloads a tiny file that fetches the actual browser data during deployment. An offline installer contains 100% of the required setup files.
