frameworks: allow last app action to be assigned to hardware keys

Also fix multi-user handling for 'switch to last app' and 'kill
foreground app' actions.

Change-Id: I1fb586d19b1198e6888b0f11e0a2813acf0bcd5b
Signed-off-by: Roman Birg <roman@cyngn.com>
Signed-off-by: Danny Baumann <dannybaumann@web.de>
Themes: Fix setting wallpaper from a legacy theme

Change-Id: I3bfc9ee24d2a3ee5c1bdb97f2c07427e6d723206
Themes: Track NotFoundException on app launch failure

We should probably keep an eye on NotFoundExceptions too since they
are a common exception thrown when a bad theme is applied.

Change-Id: I2ccaed0349a90ab99b99fb83cef0c9183d598088
Themes: Remove listener if exception is thrown

If something goes wrong and a client does not remove itself, the
theme manager may still have a reference to the listener and an
exception is thrown while trying to call one of the listener's methods.
When this happens, we should not only log it but remove the bad listener.

Change-Id: I052cdcc10b0eaa75ebf076b3ece5f8a668d3868e
SystemUI: hide up arrow NavRing indicator if no targets present

If there aren't any navring targets setup (the user has removed all of
them, or maybe search assistant is not present) then there is still a
hint in the lockscreen to pull up from the nav bar.

If there are no targets setup, hide the arrow indicator.

Change-Id: I65103a4cec668a9a8b3f678f991f5acba17d19f5
Signed-off-by: Roman Birg <roman@cyngn.com>
Revert "SystemUI: don't show eq tile while casting"

Does not work as intended.

This reverts commit 72dc45fb1b219aafa1d4b2fe62d144739ae4a552.

Change-Id: Ifd40c70c45b038983145369287a6dae177ac0a4c
ProximitySensor: check for correct MaxRange value

Use TYPICAL_PROXIMITY_THRESHOLD for devices that returns incorrect mProximitySensor.getMaximumRange() value;

Presto's proximity sensor returns values: 0.0f(near) or 5.0f(far).
mProximitySensor.getMaximumRange() must return proximity sensor's availible range, but it always return 0, so mProximityThreshold is also 0.

So boolean positive = distance >= 0.0f && distance < mProximityThreshold;  positive will never be
true.
The cause of this problem is proprietary sensor.msm8660.so, it must set proper Range and Resolution for proximity sensor.

Change-Id: I0cf81fd20f210115cbd6db10c0070b12f1c57336