In go/hello-chrome-hackathon we discovered that removing libphonenumber drops the private dirty footprint of the browser by about 630 KiB. Interestingly this only happens if the browser has a populated user profile (as opposed to a clean one).

Routing to autofill since it seems to use libphonenumber and could be the trigger mechanism here.

Will post some memory-infra traces shortly.

For reference, the patch to remove libphonenumber is at go/jekzy.