Merge from Widevine repo of http://go/wvgerrit/77604
Test: ran unit tests
Bug: 131326334 Nonce collision should be avoided in open sessions
Bug: 131325434 mac key iv should not be 16 bytes before encrypted mac key
Bug: 129368634 HDCP 2.3 and 2.2 are not distinguishable
Bug: 127423611 Question about OEMCrypto V15 API
Bug: 124312571 Picture-in-Picture -- is it really needed for Android TV?
Bug: 131175454 Extend Provisioning 3.0 Schedule
Bug: 131359743 Do not allow multiple LoadKeys in a session
Change-Id: I8db4ec921978ea918adb17420db86de69e806120
Merge from Widevine repo of http://go/wvgerrit/68184
Please add comments to the original documents at http://go/oemcrypto
or http://go/wvdelta15.
Some unit tests will need to be updated. Those will be in a separate CL.
bug: 120795057 Full Decrypt Path Testing - change design
bug: 119688262 Full Decryption Path Test update section in go/wvdelta15
bug: 117898271 Corrections to Documentation
bug: 119881959 Remove shared license from documentation.
bug: 80540710 Document double call to OEMCrypto_DeactivateUsageEntry
Test: documentation and comment change only
Change-Id: I1ef35e15207d3dabea8329a1f05518370ec099e6
Merge from master branch of Widevine repo of http://go/wvgerrit/66068
Merge from oemcrypto-v15 branch of Widevine repo of http://go/wvgerrit/62066
Bug: 111939411
Test: docs only
Test: tested as part of http://go/ag/5501993
Change-Id: Ic682b603cd6d90b10df433b76c071c303b4e35cc
