RefCounted types should not have public destructors, delegate cleanup

content/public/renderer/render_view.h

Index: content/public/renderer/render_view.h
diff --git a/content/public/renderer/render_view.h b/content/public/renderer/render_view.h
index 7d291a49ad9465c8fcf1f79b8511d9450ee82e82..3047c652826a6899be87106be0c0e3f9276e1bc8 100644
--- a/content/public/renderer/render_view.h
+++ b/content/public/renderer/render_view.h
@@ -48,8 +48,6 @@ class CONTENT_EXPORT RenderView : public IPC::Message::Sender {
   // been closed but not yet destroyed are excluded).
   static void ForEach(RenderViewVisitor* visitor);
 
-  virtual ~RenderView() {}
-
   // Get the routing ID of the view.
   virtual int GetRoutingID() const = 0;
 
@@ -130,6 +128,9 @@ class CONTENT_EXPORT RenderView : public IPC::Message::Sender {
       WebKit::WebFrame* frame,
       const WebKit::WebURLRequest& request,
       WebKit::WebNavigationPolicy policy) = 0;
+
+ protected:
+  virtual ~RenderView() {}
 };
 
 }  // namespace content