Automatically adding managed profile shortcuts to homescreen.

When the managed profile is created, a "Work" folder is created
and added to the homescreen. All work profile apps are added to this
folder and icons for subsequent installs (withing a fixed time frame)
are automatically added to this folder.
If this folder get deleted or the time-frame expires, icon for any new
install is placed on the homescreen.

Bug: 17410319
Change-Id: I49f4e437707d5eabe4eec85320765bf6ba7fde97

src/com/android/launcher3/compat/UserManagerCompat.java

@@ -43,4 +43,5 @@ public abstract class UserManagerCompat {
     public abstract UserHandleCompat getUserForSerialNumber(long serialNumber);
     public abstract Drawable getBadgedDrawableForUser(Drawable unbadged, UserHandleCompat user);
     public abstract CharSequence getBadgedLabelForUser(CharSequence label, UserHandleCompat user);
+    public abstract long getUserCreationTime(UserHandleCompat user);
 }