Add OEMCrypto_IsAntiRollbackHwPresent API for OEMCrypto v10.

Merge from WV CDM repo: https://widevine-internal-review.googlesource.com/#/c/13660/.

bug: 18948905
Change-Id: I1ffe72baaac9abf05c06139de790236e763f89a8

libwvdrmengine/oemcrypto/mock/src/oemcrypto_engine_device_properties.cpp

@@ -33,4 +33,10 @@ bool CryptoEngine::supports_storage() {
   return true;
 }
 
+// Returns false for mock library to indicate the client does not support
+// anti-rollback hardware.
+bool CryptoEngine::is_anti_rollback_hw_present() {
+  return false;
+}
+
 }  // namespace wvoec_mock