Move clearColorFilter() workaround to DrawableCompat

On API 21-22 there is an issue in DrawableContainer
where it does not propagate a null ColorFilter to all
 of it's children.

The workaround is to do it manually on those API levels,
which this CL exposes as a public API.

BUG: 28661010
Change-Id: Ie9b1068190c57395c12a800048669651774cfae6
4 files changed