"By using Chrome or ChromeOS, you agree to the Google Terms of Service located at https://policies.google.com/terms and these Google Chrome and ChromeOS Additional Terms of Service. These Google Chrome and ChromeOS Additional Terms of Service apply to the executable code version of Chrome and ChromeOS."

Google's TOS (as you can see linked there) seems to apply to both Chrome and Google Analytics. By downloading Chrome and agreeing with their EULA, you already acknowledge that this data is being collected. I don't really get what people are objecting to, here.