Setting up Source Maps in Firefox

Before I continue I want to say one thing to Firefox users: PLEASE STOP USING FIREBUG!!! The built-in Firefox dev tools have been far better than anything Firebug has had to offer for at least 6 years. Also give Firefox Developer Edition a go, it's really nice. For me Firefox Developer Edition is my development browser of choice. Overall, I'm a long time Firefox fan boy. I just think Firefox makes everything look nicer than Chrome/Safari and other browsers. Text looks better in Firefox, animations are smoother (especially animating SVG paths), and overall performance is better in Firefox, especially when multiple tabs are open (Open in New Tab is my friend). Also, the built-in dev tools are as good as Chrome's dev tools for the most part. That's just me.

My issue is not with Chrome, it's Webkit. Chrome is great for development. Their source map support is really nice. It should be, Google proposed the original source map specification. My problem is entirely...