There don't appear to be any Apps for this, and from what I've seen Google and Oracle don't look like they're going to be getting along any time soon.
You can do this, but be warned, there are negative repercussions by doing so.
Go into Dev Mode and you'll be able to do it, but, for just one example you may lose things like Netflix
I have a HP Mini laptop that I wish to install ChromeOS. I used hexxen's lime build as my laptop's wireless was not supported by vanilla, and I used a USB stick. It works fine, but I can't figure out how to install it and overwrite my existing Windows installation, as currently it seems to be running as a live USB.
It seems as though this has been done by others before,