Slight tweaks to the card view.

* Fix two APIs for correct method parameter names.
* Don't allow passing negative corner radius.
* Fix Javadocs for max elevation
* Consistent references to pre-L / L+ versions of the platform
in Javadocs.

Change-Id: Ied90e28d5eb19f9233b6a9b0e92ebd832da0c508
2 files changed