Miscellaneous AudioRendererImpl cleanup salvaged from http://codereview.chromium.org/10918022/.

media/filters/audio_renderer_impl.h

Index: media/filters/audio_renderer_impl.h
diff --git a/media/filters/audio_renderer_impl.h b/media/filters/audio_renderer_impl.h
index b154acf8a7535f1b7971129340f6ac05bbc27fe6..47a498b4079ee5f9d59f5fea28c4dbc15ca62980 100644
--- a/media/filters/audio_renderer_impl.h
+++ b/media/filters/audio_renderer_impl.h
@@ -197,18 +197,12 @@ class MEDIA_EXPORT AudioRendererImpl
 
   uint32 bytes_per_frame_;
 
-  // Used to calculate audio delay given bytes.
-  uint32 bytes_per_second_;
-
   // A flag that indicates this filter is called to stop.
   bool stopped_;
 
   // The sink (destination) for rendered audio.
   scoped_refptr<media::AudioRendererSink> sink_;
 
-  // Set to true when OnInitialize() is called.
-  bool is_initialized_;
-
   // We're supposed to know amount of audio data OS or hardware buffered, but
   // that is not always so -- on my Linux box
   // AudioBuffersState::hardware_delay_bytes never reaches 0.