NavBar defaults to display when quickswitch ends,
which is always portrait since home is now always
in portrait. We keep the same nav region that the
user used to swipe up to enter recents and reset once
they swipe to home.
Fixes: 156053957
Test: Swipe up from landscape app, then swipe up
from the same nav bar region to go home.
Change-Id: Ia4cf8172850b991aa5e145897622be3b2afa3779
Vinit Nayak
c609421f2a