media: Make MediaKeys ref-counted.

media/mojo/services/mojo_cdm_service.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 MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_H_
 #define MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "media/base/media_keys.h"
 #include "media/mojo/interfaces/content_decryption_module.mojom.h"
 #include "media/mojo/services/mojo_cdm_promise.h"
 #include "media/mojo/services/mojo_cdm_service_context.h"
 #include "mojo/application/public/interfaces/service_provider.mojom.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace media {
@@ skipping 49 matching lines @@
       final;
   void GetDecryptor(
       mojo::InterfaceRequest<interfaces::Decryptor> decryptor) final;
 
   // Get CdmContext to be used by the media pipeline.
   CdmContext* GetCdmContext();
 
  private:
   // Callback for CdmFactory::Create().
   void OnCdmCreated(scoped_ptr<MojoCdmPromise<int>> promise,
-                    scoped_ptr<MediaKeys> cdm,
+                    const scoped_refptr<MediaKeys>& cdm,
                     const std::string& error_message);
 
   // Callbacks for firing session events.
   void OnSessionMessage(const std::string& session_id,
                         MediaKeys::MessageType message_type,
                         const std::vector<uint8_t>& message,
                         const GURL& legacy_destination_url);
   void OnSessionKeysChange(const std::string& session_id,
                            bool has_additional_usable_key,
                            CdmKeysInfo keys_info);
   void OnSessionExpirationUpdate(const std::string& session_id,
                                  const base::Time& new_expiry_time);
   void OnSessionClosed(const std::string& session_id);
   void OnLegacySessionError(const std::string& session_id,
                             MediaKeys::Exception exception,
                             uint32_t system_code,
                             const std::string& error_message);
 
   // CDM ID to be assigned to the next successfully initialized CDM. This ID is
   // unique per process. It will be used to locate the CDM by the media players
   // living in the same process.
   static int next_cdm_id_;
 
   mojo::StrongBinding<interfaces::ContentDecryptionModule> binding_;
   base::WeakPtr<MojoCdmServiceContext> context_;
 
   mojo::ServiceProvider* service_provider_;
   CdmFactory* cdm_factory_;
-  scoped_ptr<MediaKeys> cdm_;
+  scoped_refptr<MediaKeys> cdm_;
 
   // Set to a valid CDM ID if the |cdm_| is successfully created.
   int cdm_id_;
 
   interfaces::ContentDecryptionModuleClientPtr client_;
 
   base::WeakPtr<MojoCdmService> weak_this_;
   base::WeakPtrFactory<MojoCdmService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoCdmService);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_H_