RefCounted types should not have public destructors, delegate cleanup

media/video/video_decode_accelerator.h

Index: media/video/video_decode_accelerator.h
diff --git a/media/video/video_decode_accelerator.h b/media/video/video_decode_accelerator.h
index 5fa0d2149348fd07854f14993ab2d3a0988b0c3a..1c98b1bb17c1ebcd3ad1ddbeda15a056ba04b109 100644
--- a/media/video/video_decode_accelerator.h
+++ b/media/video/video_decode_accelerator.h
@@ -46,8 +46,6 @@ class MEDIA_EXPORT VideoDecodeAccelerator
   // implements.
   class MEDIA_EXPORT Client {
    public:
-    virtual ~Client() {}
-
     // Callback to notify client that decoder has been initialized.
     virtual void NotifyInitializeDone() = 0;
 
@@ -73,6 +71,9 @@ class MEDIA_EXPORT VideoDecodeAccelerator
 
     // Callback to notify about decoding errors.
     virtual void NotifyError(Error error) = 0;
+
+   protected:
+    virtual ~Client() {}
   };
 
   // Video decoder functions.