In VS 2010 and VS 2008 there was the Test View. From there you can get at a number of Test Studio specific test level settings, such as BrowserType, SilverlightEnabled, etc. There appears to be no equivalent in VS 2012. Test View has been replaced with a Test Explorer, but clicking on a test in Test Explorer does not bring up any test properties. As a result it appears you have no method to get at the Test Studio specific settings in VS 2012.