This is a workaround till we find a better solution. Posting start() on mail
looper will make sure the animation starts but animation can stop randomly
when the list gets refreshed which happens for example any time the user
interacts with the list by check/uncheking boxes. This is because the list
rebuilds itself and views gets detached/attached which binds to a new view.
The long term solution is to switch to the new animator framework but for now
posting on main looper will be consistent with GB behavior.
Bug: 3426585
Change-Id: I77f15873bb47ad05113dc914a5d3d6d8af27e2e8
