Make AudioParameters a class instead of a struct

media/base/audio_renderer_sink.h

Index: media/base/audio_renderer_sink.h
diff --git a/media/base/audio_renderer_sink.h b/media/base/audio_renderer_sink.h
index 3a7017a7c336f09a1dd38ef8d10193b1883350a0..01eb18533587bdcd7b243a57c5402ca43cfb6cff 100644
--- a/media/base/audio_renderer_sink.h
+++ b/media/base/audio_renderer_sink.h
@@ -43,10 +43,7 @@ class AudioRendererSink
 
   // Sets important information about the audio stream format.
   // It must be called before any of the other methods.
-  virtual void Initialize(size_t buffer_size,
-                          int channels,
-                          double sample_rate,
-                          AudioParameters::Format latency_format,
+  virtual void Initialize(const AudioParameters& params,
                           RenderCallback* callback) = 0;
 
   // Starts audio playback.