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Jeff Tinker 665c9c1525 Verify version number of Level 1 OEMCrypto before using it

There is an OEMCrypto wrapper that loads the OEM provided library.
For debugging and initial implementation, this only verified that some
of the API existed before continuing.
With this CL, the level 1 library is not used if any of the API
functions are missing, or if the version number is not correct.  There
is no plan to make this library backwards compatible.

bug: 8621521

Merge of https://widevine-internal-review.googlesource.com/#/c/5264/
from the Widevine CDM repo.

Change-Id: Ie82907925450b9fe93d0d857c1133f5382f55d21

2013-04-25 14:48:19 -07:00