Default Replacing front panel with warranty?

Hey everyone.

One question about warranty.

If I send my Nexus 7 to repair because of the touchscreen problem, do they replace the outside front panel completely for a new one or just the touchscreen inside?

I ask because I've got a little scratch on the screen and it would be great if they changed the front panel for a new one so I don't have it anymore.

Anyone who has sent their Nexus 7 to repair because of the touchscreen problem can confirm if they replace the front panel when taking care of this problem?

Thanks!