Where is the Accept-CH cash located in the Chrome subdirectories on Windows?

[myonlinematters]

I am writing a post on client hints infrastructure for www.theprivacysandbox.com and have seen the Accept-CH cache in the spec. When I write, I always like to understand where the data is stored and in what format (e.g. SQlite file, IndexDB, etc), see if I can read it, and show my readers how to examine it for their user agent.

I have looked and don't see a Accept-CH cache or user-agent cache subdirectory anywhere within C:\Users<user_name>\AppData\Local\Google\Chrome\User Data or any of its subdirectories. Can someone point me to the right subdirectory, even if the data is not easily available to the user agent?

Thanks

[miketaylr]

https://chromium.googlesource.com/chromium/src/+/HEAD/components/client_hints/README.md#accept_ch-cache may be useful to you.

cc @arichiv ^^