OEMCrypto Resource Rating

Merge from master branch of Widevine repo of http://go/wvgerrit/66072
Merge from oemcrypto-v15 branch of Widevine repo of http://go/wvgerrit/63764

This adds the function OEMCrypto_ResourceRatingTier to the oemcrypto referenece
code, dynamic adapter, and unit tests.

Bug: 117110800
Test: tested as part of http://go/ag/5501993

Change-Id: Idf47af405f0c69601108b75c788a97b30abdb39d

libwvdrmengine/oemcrypto/test/oec_device_features.cpp

@@ -94,6 +94,9 @@ void DeviceFeatures::Initialize(bool is_cast_receiver,
     }
   }
   printf("cast_receiver = %s.\n", cast_receiver ? "true" : "false");
+  resource_rating = OEMCrypto_ResourceRatingTier();
+  printf("resource_rating = %d, security leve %s.\n", resource_rating,
+         OEMCrypto_SecurityLevel());
   switch (derive_key_method) {
     case NO_METHOD:
       printf("NO_METHOD: Cannot derive known session keys.\n");