Display application icon in the title bar

Question

In Unity's default configuration the title bar looks like this:

I'd like to achieve this:

Is it possible to show the icon of the application in the title bar?

Answer 1

I see now it was a metacity related question. I added
<icon x="(width - title_width) / 2 - mini_icon_width - 7" y="(height - title_height) / 2 " width="mini_icon_width" height="mini_icon_height" />
to the <draw_ops> respective tag in the metacity file theme and it did what I wanted.