These changes are similar to those of CL 49296. They do not include the
generic fixes done on GenericInflater.java, which had issues and broke the build.
Added a asSubClass method in LayoutInflater which will (correctly) throw a
ClassCastException when the inflated class is not a View subclass.
Performance testing on these changes showed a 10% performance improvement,
which is still to be explained.
Change-Id: Id4d3b45f0945baccdbbda15fcce095e855b23c9a
3030193dc1