Now with hierarachical animation, the layer of
RecentsAnimation / RemoteAnimation are controlled by system.
Now Launcher side don't need to have other way to set layer for ZBoost
case, so remove setLayer & withLayer related logics for cleaning up.
Fix: 151024899
Test: manual, launch google map app -> enter PiP mode,
swipe up to overview screen or launch activity from shortcut,
make sure the PiP window is not covered by other apps.
Change-Id: I8028cd50d66f7d77e5d1ec6514e953c8be9935d6
(cherry picked from commit 99f7da7dd2)
Ming-Shin Lu
4f07525417