Developer Tools: Shark and Lion not working?

I've used Shark, a performance testing application, as a part of the previous Developer Tools to test applications for software developers. After upgrading to Lion, as expected, it doesn't work. It bounces a time or two then goes away. No problem, I thought, I'll just update to the latest Developer tools. After down loading it from the App Store (very cool), I noticed it no longer comes with Shark! Anyone have any ideas how I might get the old Shark to work, or if Apple has replaced it this tool with another similar one?

Thanks!