Combine bytes-decoded notification with memory usage and frame count.

media/renderers/audio_renderer_impl.h

Index: media/renderers/audio_renderer_impl.h
diff --git a/media/renderers/audio_renderer_impl.h b/media/renderers/audio_renderer_impl.h
index c036727f35adfc078d5a0dbbc220385298e1a9dc..d628b9ada6edd16cba3c5ada3dc5234803b11616 100644
--- a/media/renderers/audio_renderer_impl.h
+++ b/media/renderers/audio_renderer_impl.h
@@ -121,6 +121,9 @@ class MEDIA_EXPORT AudioRendererImpl
     kPlaying
   };
 
+  // Callback for audio decoder to report statistics.
+  void BytesDecoded(uint64_t bytes);
+
   // Callback from the audio decoder delivering decoded audio samples.
   void DecodedAudioReady(AudioBufferStream::Status status,
                          const scoped_refptr<AudioBuffer>& buffer);
@@ -231,6 +234,9 @@ class MEDIA_EXPORT AudioRendererImpl
   // Overridable tick clock for testing.
   std::unique_ptr<base::TickClock> tick_clock_;
 
+  // Bytes decoded since the last time statistics was reported.
+  uint64_t bytes_decoded_;
+
   // Memory usage of |algorithm_| recorded during the last
   // HandleSplicerBuffer_Locked() call.
   int64_t last_audio_memory_usage_;