I don't think the Register were too impressed with this aspect of Chrome.
Granting Google 'a perpetual, irrevocable, worldwide, royalty-free and non-exclusive licence to reproduce, adapt, modify, translate, publish, publicly perform, publicly display and distribute any Content that you submit, post or display on or through' Chrome is coming it rich.
Burned by Chrome | The Register
For owners of web sites it seems that to use their service you sign away all your copyright to your own website.
It's small wonder now that Google have been suspiciously quiet about Phorm / BT and their alleged illegal interception of search requests by internet users when they are up to something very similar.
It might be worth reading some of the links provided on the end of the above article for more background details.