Cas Client repo update-2.

-Parse EMM in Cas plugin
-Entitlement key rotation support
-Multi_content_license support

plugin/include/ecm_parser_v2.h

@@ -63,6 +63,10 @@ class EcmParserV2 : public EcmParser {
   std::string ecm_serialized_payload() const override { return ""; }
   std::string signature() const override { return ""; }
 
+  bool is_entitlement_rotation_enabled() const override { return false; }
+  uint32_t entitlement_period_index() const override { return 0; }
+  uint32_t entitlement_rotation_window_left() const override { return 0; }
+
  private:
   // Constructs an EcmParserV2 using |ecm|.
   explicit EcmParserV2(const CasEcm& ecm);