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_mock.h

@@ -256,6 +256,7 @@ class CryptoEngine {
   bool local_display();
   bool closed_platform();
   bool supports_storage();
+  bool is_anti_rollback_hw_present();
 
  private:
   SessionContext* current_session_;