Convert chrome extension to developer tools extension - repost

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 [login to view URL] 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.