Update AudioRenderer, VideoRenderer, and AudioDecoder Initialize() methods to use PipelineStatusCB.

media/filters/audio_renderer_base.h

Index: media/filters/audio_renderer_base.h
diff --git a/media/filters/audio_renderer_base.h b/media/filters/audio_renderer_base.h
index 4326901b0670516380b6a627feee277a3464ec0e..85549ee746d1c5edc6a70a919022f5832aabac8f 100644
--- a/media/filters/audio_renderer_base.h
+++ b/media/filters/audio_renderer_base.h
@@ -42,7 +42,7 @@ class MEDIA_EXPORT AudioRendererBase : public AudioRenderer {
 
   // AudioRenderer implementation.
   virtual void Initialize(AudioDecoder* decoder,
-                          const base::Closure& init_callback,
+                          const PipelineStatusCB& init_callback,
                           const base::Closure& underflow_callback) OVERRIDE;
   virtual bool HasEnded() OVERRIDE;
   virtual void ResumeAfterUnderflow(bool buffer_more_audio) OVERRIDE;