[Chromecast] Pass security origin to CastCdm and remove destination url

chromecast/media/cdm/cast_cdm.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMECAST_MEDIA_CDM_cast_cdm_H_
 #define CHROMECAST_MEDIA_CDM_cast_cdm_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 59 matching lines @@
                             uint32_t system_code) = 0;
 
   // ::media::MediaKeys implementation.
   ::media::CdmContext* GetCdmContext() override;
 
  protected:
   ~CastCdm() override;
 
   void OnSessionMessage(const std::string& session_id,
                         const std::vector<uint8_t>& message,
-                        const GURL& destination_url,
                         ::media::MediaKeys::MessageType message_type);
   void OnSessionClosed(const std::string& session_id);
   void OnSessionKeysChange(const std::string& session_id,
                            bool newly_usable_keys,
                            ::media::CdmKeysInfo keys_info);
 
   void KeyIdAndKeyPairsToInfo(const ::media::KeyIdAndKeyPairs& keys,
                               ::media::CdmKeysInfo* key_info);
 
  private:
@@ skipping 13 matching lines @@
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(CastCdm);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_CDM_cast_cdm_H_