Ensures that audio tasks cannot run after AudioManager is deleted.

chromecast/browser/cast_content_browser_client.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_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_
 #define CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 82 matching lines @@
   // Returns the task runner that must be used for media IO.
   scoped_refptr<base::SingleThreadTaskRunner> GetMediaTaskRunner();
 
   // Creates a MediaPipelineBackendFactory.
   virtual media::MediaPipelineBackendFactory* GetMediaPipelineBackendFactory();
 
   media::MediaResourceTracker* media_resource_tracker();
 
   media::MediaPipelineBackendManager* media_pipeline_backend_manager();
 
-  ::media::ScopedAudioManagerPtr CreateAudioManager(
+  std::unique_ptr<::media::AudioManager> CreateAudioManager(
       ::media::AudioLogFactory* audio_log_factory) override;
   std::unique_ptr<::media::CdmFactory> CreateCdmFactory() override;
 #endif  // BUILDFLAG(IS_CAST_USING_CMA_BACKEND)
   media::MediaCapsImpl* media_caps();
 
   // Invoked when the metrics client ID changes.
   virtual void SetMetricsClientId(const std::string& client_id);
 
   // Allows registration of extra metrics providers.
   virtual void RegisterMetricsProviders(
@@ skipping 98 matching lines @@
   std::unique_ptr<media::MediaPipelineBackendFactory>
       media_pipeline_backend_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastContentBrowserClient);
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_