Need help finding a border texture

[luckfore]

Hey guys,

I'm working on bringing the pre 10.x UI back to WoW and Im having some trouble finding a particular texture.
I am looking for the TopRightCorner texture with support for 2 buttons (maximize and close buttons)
In SharedUIPanelTemplates.xml I can only find one texture for this frame (UI-Frame-TopCornerRight) and it only has place for the close button.

This is what the texture looked like pre 10.x:
This is what my version looks like with support for only 1 button:

If anyone can point me to the right texture and texcoords i'd really appreciate the help!