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/cdm/core/src/crypto_session.cpp

@@ -40,6 +40,7 @@ std::string EncodeUint32(unsigned int u) {
 }
 
 const uint32_t kRsaSignatureLength = 256;
+// TODO(b/117112392): adjust chunk size based on resource rating.
 const size_t kMaximumChunkSize = 100 * 1024;  // 100 KiB
 const size_t kEstimatedInitialUsageTableHeader = 40;
 const size_t kOemCryptoApiVersionSupportsBigUsageTables = 13;