Draw a fake home handle during QuickSwitch

If the app user quick switches to is of a
different orientation than that of previous
app, draw a home handle in the previous
orientation so user knows they can continue
swiping there.

Fixes: 150250451
Test: QuickSwitched between apps of different
orientation and saw that it home handle is
drawn in old orientation.

Change-Id: I743e7d3d31b250124c402bed203b3b37c8cfeb26