Prevent renewal license when can_renew is set to false

[ Merge of https://go/wvgerrit/15670 ]

b/18459002

Change-Id: Idad43a621750ff01aee61e8d972957f364a698cf

libwvdrmengine/cdm/core/include/policy_engine.h

@@ -80,6 +80,8 @@ class PolicyEngine {
 
   bool IsLicenseOrPlaybackDurationExpired(int64_t current_time);
 
+  bool CanRenew() { return policy_.can_renew(); }
+
  private:
   friend class PolicyEngineTest;