media: Add ServiceFactory mojo interface and implementation.

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/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 {
 
 class CdmFactory;
-class MojoCdmServiceContext;
 
 // A interfaces::ContentDecryptionModule implementation backed by a
 // media::MediaKeys.
 class MojoCdmService : public interfaces::ContentDecryptionModule {
  public:
   // Constructs a MojoCdmService and strongly binds it to the |request|.
   MojoCdmService(
-      MojoCdmServiceContext* context,
+      base::WeakPtr<MojoCdmServiceContext> context,
       mojo::ServiceProvider* service_provider,
       CdmFactory* cdm_factory,
       mojo::InterfaceRequest<interfaces::ContentDecryptionModule> request);
 
   ~MojoCdmService() final;
 
   // interfaces::ContentDecryptionModule implementation.
   void SetClient(interfaces::ContentDecryptionModuleClientPtr client) final;
   void Initialize(const mojo::String& key_system,
                   const mojo::String& security_origin,
@@ skipping 51 matching lines @@
                            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);
 
   mojo::StrongBinding<interfaces::ContentDecryptionModule> binding_;
-  MojoCdmServiceContext* context_;
+  base::WeakPtr<MojoCdmServiceContext> context_;
+
   mojo::ServiceProvider* service_provider_;
   CdmFactory* cdm_factory_;
   scoped_ptr<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_