OEMCrypto Backwards Compatible Usage Table

Merge from widevine of http://go/wvgerrit/23283

This CL adds the backwards compatiblity functions to the new usage
tables in the oemcrypto mock reference code.

b/31458046
b/32554171

Change-Id: I04901d95aceb8910406f7c514c26c29c2c575322

libwvdrmengine/oemcrypto/test/oemcrypto_test_android.cpp

@@ -130,4 +130,12 @@ TEST_F(OEMCryptoAndroidNYCTest, MinVersionNumber11) {
   ASSERT_GE(version, 11u);
 }
 
+// These tests are required for O Android devices.
+class OEMCryptoAndroidOCTest : public OEMCryptoAndroidNYCTest {};
+
+TEST_F(OEMCryptoAndroidOCTest, MinVersionNumber13) {
+  uint32_t version = OEMCrypto_APIVersion();
+  ASSERT_GE(version, 13u);
+}
+
 }  // namespace wvoec