Merge from Widevine repo of http://go/wvgerrit/95283
If an entry is loaded in a second session, the error should be
OEMCrypto_ERROR_INVALID_SESSION.
Bug: 150647218
Test: ran unit tests
Change-Id: I4e666ce6626303a36b16997f0a012d57a7039697
Change-Id: Id0e73dec5879ec9ec4e8ab8ebe1590c568e7f0af