Make OEM Crypto API version available through mediaDrm properties

[ Merge of http://go/wvgerrit/15540 ]

b/22771529

Change-Id: I8a3d3b3d7a943c531ef0ff2c860442e0690b9175

libwvdrmengine/cdm/core/src/cdm_engine.cpp

@@ -473,6 +473,14 @@ CdmResponseType CdmEngine::QueryStatus(SecurityLevel security_level,
         max_sessions_stream.str();
   }
 
+  uint32_t api_version;
+  success = crypto_session.GetApiVersion(&api_version);
+  if (success) {
+    std::ostringstream api_version_stream;
+    api_version_stream << api_version;
+    (*key_info)[QUERY_KEY_OEMCRYPTO_API_VERSION] = api_version_stream.str();
+  }
+
   return NO_ERROR;
 }