RefCounted types should not have public destructors, content/ remaining bits

content/public/browser/resource_dispatcher_host_login_delegate.h

Index: content/public/browser/resource_dispatcher_host_login_delegate.h
diff --git a/content/public/browser/resource_dispatcher_host_login_delegate.h b/content/public/browser/resource_dispatcher_host_login_delegate.h
index 0d99edb073107b7ca32ac9e8c718764922dbfaa9..d856686d0f979a1c45584b033c6f63cda91869e2 100644
--- a/content/public/browser/resource_dispatcher_host_login_delegate.h
+++ b/content/public/browser/resource_dispatcher_host_login_delegate.h
@@ -20,11 +20,13 @@ namespace content {
 class CONTENT_EXPORT ResourceDispatcherHostLoginDelegate
     : public base::RefCountedThreadSafe<ResourceDispatcherHostLoginDelegate> {
  public:
-  virtual ~ResourceDispatcherHostLoginDelegate() {}
-
   // Notify the login delegate that the request was cancelled.
   // This function can only be called from the IO thread.
   virtual void OnRequestCancelled() = 0;
+
+ protected:
+  friend class base::RefCountedThreadSafe<ResourceDispatcherHostLoginDelegate>;
+  virtual ~ResourceDispatcherHostLoginDelegate() {}
 };
 
 }  // public content