tree a62a048639a7042f4026bced00019bb0f29df204
parent 25b8e1d3492d47cd8be03fce6de002b39f53c441
author Kenny Root <kroot@google.com> 1363025660 -0700
committer Kenny Root <kroot@google.com> 1363025978 -0700

NativeCrypto: throw instead of return null

We should not return null for items that cannot be extracted. Instead
throw UnsupportedOperationException so we don't break the API contract.

Change-Id: I09b0854c36f02b5b7ead2fb802f1454353b4cf6e