Merge from widevine repo of http://go/wvgerrit/14321
It is expected that OEMCrypto will only be given subsamples with a
block offset when there are multiple subsamples, so that the entire
sample may be decrypted after all calls are made. This CL modifies
the existing tests so that the result of DecryptCTR is only checked
after all subsamples have been decrypted.
Also, the QueryKeyControl test has been modified so that failure does
not require a specific error code.
bug: 20757848
bug: 21063276
Change-Id: Ie2b12b287b0c9c661cd14111b2ae9eab004cd8b8
994a7fc4c1