RefCounted types should not have public destructors, webkit/ edition

webkit/media/webmediaplayer_delegate.h

Index: webkit/media/webmediaplayer_delegate.h
diff --git a/webkit/media/webmediaplayer_delegate.h b/webkit/media/webmediaplayer_delegate.h
index cd595f10ea6e16961f0e9951ddbd1e45ae5c0de9..7f5e4ee451c2c7e54554297a9a5dfd4031fe74b0 100644
--- a/webkit/media/webmediaplayer_delegate.h
+++ b/webkit/media/webmediaplayer_delegate.h
@@ -15,7 +15,6 @@ namespace webkit_media {
 class WebMediaPlayerDelegate {
  public:
   WebMediaPlayerDelegate() {}
-  virtual ~WebMediaPlayerDelegate() {}
 
   // The specified player started playing media.
   virtual void DidPlay(WebKit::WebMediaPlayer* player) {}
@@ -25,6 +24,9 @@ class WebMediaPlayerDelegate {
 
   // The specified player was destroyed. Do not call any methods on it.
   virtual void PlayerGone(WebKit::WebMediaPlayer* player) {}
+
+ protected:
+  virtual ~WebMediaPlayerDelegate() {}
 };
 
 }  // namespace webkit_media