I don't intend to beat a dead horse here but I know there's selenium, awesomium, phantomjs, etc. They all don't seem compatible with mono and you have to kind of pull teeth to set it up.
I need a very light weight headless browser that supports javascript just to retrieve 1 cookie from a website. I cannot see that cookie with HttpClient because I believe javascript is generating it. I do not need any snapshots, any views, or anything crazy. I just want a simple headless browser that will output the cookies retrieved from a website.
I tried awesomium but it is not so awesome. It doesn't run well on mono / xamarin.