Fix wallpaper glitch and moving window animation.

1. Previous fix to hide wallpaper at the same time the wallpaper target
was hidden was too aggressive. In the case where one wallpaper target
was replacing another we would lose the wallpaper for an instant.

2. Previous fix to keep from overwriting the moving window boundaries
was incomplete.  The default values for the parent window were 0,0
which caused the lock window animation to translate down and to the
right. Defaulting the parent window boundaries to the full screen
and restoring it to the full screen after each animation fixes this.

Fixes bug 6472070.

Change-Id: I0b13c642c1aaab666cdd0f4a1e7fb4b716e6b17f
1 file changed