Improve view recycling.

Don't start fade in until view is attached, otherwise views bound during
the leanback measure phase aren't recycled.

Don't start animation immediately when attached because the framework will
double count the child having transient state.

b/18742856

Change-Id: I21a0bde9a501454d1bbe244c49b2fd3fbdeaa120
(cherry picked from commit 89589687d8aafcfdc11d9760205e9d0b16505201)
1 file changed