This is a copy from the Widevine CDM repository:
https://widevine-internal-review.googlesource.com/#/c/9177/4
This CL modifies some unit tests to make sure that OEMCrypto returns
the correct error code when the key has expired. This behaviour is
required for OEMCrypto version 9.
It also updates the code for the reference implementation and the
Level 3 implementation.
This is half of b/9205119
The other half is for the CDM layer to respond to this error code.
bug: 9205119
Change-Id: I60f934886f4ecdd1ee04825dea289fda1c0a4303
7a4ae90b5b