Send out a configuration change when screen size changes due to expanded
desktop.

This kills the status/nav bar hide/show animation, but it's required by
some apps to recalculate their content correctly.

Change-Id: I3f4844815005acab111853fa707cd461f83e2efe
services: don't clear wallpaper when SystemUI
disconnects.

When we restart SystemUI (or the user), sometimes
the wallpaper would get cleared. This patch just
captures its originating component and
if that is our SystemUI component, ignore the event.

Change-Id: I3e159dc2c013e7d7e552e3c0cef55e3ab970ca87
Signed-off-by: Roman Birg <romanbirg@gmail.com>