Pick widevine oemcrypto-v18 change

No-Typo-Check: From a third party header file
Bug: 260918793
Test: unit tests
Test: atp v2/widevine-eng/drm_compliance
Change-Id: I36effd6a10a99bdb2399ab1f4a0fad026d607c70

libwvdrmengine/oemcrypto/odk/include/OEMCryptoCENCCommon.h

@@ -142,6 +142,17 @@ typedef enum OEMCrypto_PrivateKeyType {
   OEMCrypto_PrivateKeyType_MaxValue = OEMCrypto_ECC_Private_Key,
 } OEMCrypto_PrivateKeyType;
 
+/**
+ * The base for (delayed) timers, i.e. from what time the (delayed) timer
+ * starts.
+ */
+typedef enum OEMCrypto_TimerDelayBase {
+  OEMCrypto_License_Start = 0,
+  OEMCrypto_License_Load = 1,
+  OEMCrypto_First_Decrypt = 2,
+  OEMCrypto_TimerDelayBase_MaxValue = OEMCrypto_First_Decrypt,
+} OEMCrypto_TimerDelayBase;
+
 /**
  *  Used to indicate a substring of a signed message in OEMCrypto_LoadKeys and
  *  other functions which must verify that a parameter is contained within a