RefCounted types should not have public destructors, delegate cleanup

media/base/demuxer.h

Index: media/base/demuxer.h
diff --git a/media/base/demuxer.h b/media/base/demuxer.h
index a8cf50b9f003df63f3d76adab967c395fc73a000..55eb31e2665d07220d7b00523e2143dd73f0a882 100644
--- a/media/base/demuxer.h
+++ b/media/base/demuxer.h
@@ -16,8 +16,6 @@ namespace media {
 
 class MEDIA_EXPORT DemuxerHost : public DataSourceHost {
  public:
-  virtual ~DemuxerHost();
-
   // Get the duration of the media in microseconds.  If the duration has not
   // been determined yet, then returns 0.
   virtual void SetDuration(base::TimeDelta duration) = 0;
@@ -28,6 +26,9 @@ class MEDIA_EXPORT DemuxerHost : public DataSourceHost {
   // Stops execution of the pipeline due to a fatal error.  Do not call this
   // method with PIPELINE_OK.
   virtual void OnDemuxerError(PipelineStatus error) = 0;
+
+ protected:
+  virtual ~DemuxerHost();
 };
 
 class MEDIA_EXPORT Demuxer : public base::RefCountedThreadSafe<Demuxer> {