Some fixes for transition animation selection
- Request wallpaper adjust after we clear mDestroying or
mAnimatingExit flags, as these could affect wallpaper
target selection result.
- Adjust wallpaper before we check lower/upper target. As
there could be pending operations that requested a wall-
paper update. Lower/upper target is needed to correctly
decide if the opening or closing apps had wallpaper.
- Make sure lower/upper targets are set even when current
target is clientHidden, in which case we should set
wallpaper target to old target but the lower/upper
still needs to be set up.
bug:
30255354
Change-Id: Ie2c94439142cbb91660c5aa4164cc660831486d5