FloatingActionButton border DO NOT MERGE

This CLs add functionality to add a circular bevel
like stroke around the FAB. Also tidied up the
DrawableWrapper tinting to make sure we invalidate
the tint correctly.

BUG: 21087747

Change-Id: I97e8309574986cdb256c4a9aa7d2c2d1f20d87b1
10 files changed