Move AudioRenderer out of Filter heirarchy.

media/base/composite_filter.cc

Index: media/base/composite_filter.cc
diff --git a/media/base/composite_filter.cc b/media/base/composite_filter.cc
index c3e15c84c8bcf7a0654aefe71b68d930465ecb98..21bad5cb1f1976f00b74184945d20ef945f83956 100644
--- a/media/base/composite_filter.cc
+++ b/media/base/composite_filter.cc
@@ -25,7 +25,6 @@ class CompositeFilter::FilterHostImpl : public FilterHost {
   virtual base::TimeDelta GetDuration() const OVERRIDE;
   virtual void SetNaturalVideoSize(const gfx::Size& size) OVERRIDE;
   virtual void NotifyEnded() OVERRIDE;
-  virtual void DisableAudioRenderer() OVERRIDE;
 
  private:
   CompositeFilter* parent_;
@@ -469,8 +468,4 @@ void CompositeFilter::FilterHostImpl::NotifyEnded() {
   host_->NotifyEnded();
 }
 
-void CompositeFilter::FilterHostImpl::DisableAudioRenderer() {
-  host_->DisableAudioRenderer();
-}
-
 }  // namespace media