Chrome puts itself on Startup Applications

I don't know if this happened with Oneiric, but since I installed Precise I have noticed that Google Chrome put itself on my Startup Applications and processes like "chrome-no-startup-window", "chrome-sandbox", "chrome-sandbox", "chrome-type-zygote", etc. keep on running on the background. If I remove Chrome from my Startup Applications, it will show back next time I start the computer. How can I get Chrome to stop misbehaving like this?

I use Chromium not Chrome so they could be different, but try unchecking

Background Apps: (*) Continue running background apps when Chromium is closed

which is located at chrome://settings/advanced (or in settings:under the hood via the menus) down at the bottom of the page, as shown in this screenshot:

Good luck!