Fix issue #5906017: Missing menu entries in portrait when in compatibility mode

This was a bug only when the status bar was hidden, the screen space for
the nav bar would not be correctly removed for all frames used in layout
computation.

This code really $*#&^!! needs to be cleaned up, the whole "status bar
is the system bar when on a tablet so it should take space from apps,
but status bar doesn't do that on phones but on phones there is a nav
bar that does the same thing" thing is whacked.

Proof that evolution DOESN'T WORK!!!!!!!!!!

Change-Id: I24e4994328480820cb638e7a40aa0b65b7ae2003