Merge from widevine of http://go/wvgerrit/23042 This updates unit tests to account for key control block changes for OEMCrypto v13. There are two new bits, restricting SRM version and restricting analog output. The verification string is also updated. Part of this is to include some simple unit tests for the SRM functions. b/33815454 b/28955520 Change-Id: I7cc2ce508688fded2b67fc2a4379c7a8d59d8d22