Could I suggest changing this to something like:
```coffeescript
schedule:
    window.requestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    window.oRequestAnimationFrame ||
    window.msRequestAnimationFrame ||
    _.defer
```

And calling it with:
```coffeescript
@schedule(@processRenderQueue)
```

This removes the need of doing the lookup of `requestAnimationFrame` every time it is called.

Given the static nature of this function, it could then be moved to another module like `Util` to allow for reuse.