OEMCrypto v16.2

Merge from Widevine repo of http://go/wvgerrit/93404

This is the unit tests, reference code, and documentation for
OEMCrypto v16.2. Backwards compatibility should work for a v15
OEMCrypto.

Some review comments will be addressed in future CLs.

Bug: 141247171
Test: Unit tests
Test: Media GTS tests on bonito
Change-Id: I9d427c07580e180c0a4cfdc4a68f538d351c0ddd

libwvdrmengine/oemcrypto/odk/include/OEMCryptoCENCCommon.h

@@ -106,6 +106,21 @@ typedef enum OEMCrypto_Usage_Entry_Status {
   kInactiveUnused = 4,
 } OEMCrypto_Usage_Entry_Status;
 
+/*
+ *  OEMCrypto_LicenseType is used in the license message to indicate if the key
+ *  objects are for content keys, or for entitlement keys.
+ */
+typedef enum OEMCrypto_LicenseType {
+  OEMCrypto_ContentLicense = 0,
+  OEMCrypto_EntitlementLicense = 1
+} OEMCrypto_LicenseType;
+
+/* Private key type used in the provisioning response. */
+typedef enum OEMCrypto_PrivateKeyType {
+  OEMCrypto_RSA_Private_Key = 0,
+  OEMCrypto_ECC_Private_Key = 1,
+} OEMCrypto_PrivateKeyType;
+
 /*
  *  OEMCrypto_Substring
  *