The OEMCrypto library should prevent too many nonces from occuring in
a row. Previously, we tested that GenerateNonce generated an error if
there were too many nonce requests.
This CL makes it possible for OEMCrypto to delay the return from
GenerateNonce if there are too many requests. This is an equally
valid solution to the nonce flood attack.
This is a unit test change only. No production code is affected.
This is a merge from the widevine repository of:
https://widevine-internal-review.googlesource.com/#/c/11604/
bug: 17630253
Change-Id: Ie97f712d70230cd8e7ea7089da0aa18039673bb4
2ca704e5c0