media: Make MediaKeys ref-counted.

content/renderer/media/crypto/ppapi_decryptor.h

 // Copyright 2013 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 CONTENT_RENDERER_MEDIA_CRYPTO_PPAPI_DECRYPTOR_H_
 #define CONTENT_RENDERER_MEDIA_CRYPTO_PPAPI_DECRYPTOR_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 30 matching lines @@
       bool allow_distinctive_identifier,
       bool allow_persistent_state,
       const CreatePepperCdmCB& create_pepper_cdm_cb,
       const media::SessionMessageCB& session_message_cb,
       const media::SessionClosedCB& session_closed_cb,
       const media::LegacySessionErrorCB& legacy_session_error_cb,
       const media::SessionKeysChangeCB& session_keys_change_cb,
       const media::SessionExpirationUpdateCB& session_expiration_update_cb,
       const media::CdmCreatedCB& cdm_created_cb);
 
-  ~PpapiDecryptor() override;
-
   // media::MediaKeys implementation.
   void SetServerCertificate(
       const std::vector<uint8_t>& certificate,
       scoped_ptr<media::SimpleCdmPromise> promise) override;
   void CreateSessionAndGenerateRequest(
       SessionType session_type,
       media::EmeInitDataType init_data_type,
       const std::vector<uint8_t>& init_data,
       scoped_ptr<media::NewSessionCdmPromise> promise) override;
   void LoadSession(SessionType session_type,
@@ skipping 34 matching lines @@
 
  private:
   PpapiDecryptor(
       scoped_ptr<PepperCdmWrapper> pepper_cdm_wrapper,
       const media::SessionMessageCB& session_message_cb,
       const media::SessionClosedCB& session_closed_cb,
       const media::LegacySessionErrorCB& legacy_session_error_cb,
       const media::SessionKeysChangeCB& session_keys_change_cb,
       const media::SessionExpirationUpdateCB& session_expiration_update_cb);
 
+  ~PpapiDecryptor() override;
+
   void InitializeCdm(const std::string& key_system,
                      bool allow_distinctive_identifier,
                      bool allow_persistent_state,
                      scoped_ptr<media::SimpleCdmPromise> promise);
 
   void OnDecoderInitialized(StreamType stream_type, bool success);
 
   // Callbacks for |plugin_cdm_delegate_| to fire session events.
   void OnSessionMessage(const std::string& session_id,
                         MediaKeys::MessageType message_type,
@@ skipping 39 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<PpapiDecryptor> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PpapiDecryptor);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_CRYPTO_PPAPI_DECRYPTOR_H_