Convert chrome extension to developer tools extension - repost

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
This is a very urgent project and very easy,takes only an hour

I have a chrome extension that opens a floating window in the browser but breaks if the page has Javascript errors, inherits the colors from the page, etc.

I figured I should have developed it as a Developer Tools Extension like this one

I need help converting it to an extension and also adding a few new features, and bug fixes.

In order to qualify for an interview, please provide a few lines of code that solve this problem (the code would reside inside a chrome add-in):

1. Get the user agent from the request
2. Use a regular expression to extract the Chrome version number
3. Print the extracted version number in the Javascript console

For example: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36"
-> 27.0.1453.110

Also, please solve the simple riddle below. I need to make sure you can think clearly (and actually read the job posts before you apply :).

There is a snake, a mouse, and a piece of cheese in one side of a river. You need to transport them SAFELY, one at a time to the other side.
If left alone, the snake would eat the mouse, and the mouse would eat the cheese.

Skills required:
Google Chrome, Javascript, jQuery / Prototype
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