CmaMediaPipelineClient to watch media pipeline status

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 <string>
 #include <vector>
@@ skipping 46 matching lines @@
   GetBrowserMessageFilters();
 
   // Provide an AudioManagerFactory instance for WebAudio playback.
   virtual scoped_ptr<::media::AudioManagerFactory> CreateAudioManagerFactory();
 
 #if !defined(OS_ANDROID)
   // Creates a MediaPipelineDevice (CMA backend) for media playback, called
   // once per media player instance.
   virtual scoped_ptr<media::MediaPipelineBackend> CreateMediaPipelineBackend(
       const media::MediaPipelineDeviceParams& params);
+  virtual void OnMediaPipelineBackendCreate();
+  virtual void OnMediaPipelineBackendDestroy();

[halliwell, 2015/08/25 00:48:34]

nit: created, destroyed.

[yucliu1, 2015/08/25 04:27:57]

Done.

 #endif
 
   // Performs cleanup for process exit (but before AtExitManager cleanup).
   void ProcessExiting();
 
   // 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 94 matching lines @@
 
   scoped_ptr<URLRequestContextFactory> url_request_context_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastContentBrowserClient);
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_