RefCounted types should not have public destructors, chrome/browser/ui

chrome/browser/ui/webui/about_ui.cc

Index: chrome/browser/ui/webui/about_ui.cc
diff --git a/chrome/browser/ui/webui/about_ui.cc b/chrome/browser/ui/webui/about_ui.cc
index 84921a40bdb45ed183df85a5488d32676f708161..12d4f8e5b47094db54511bd96fad46c66b0cef3b 100644
--- a/chrome/browser/ui/webui/about_ui.cc
+++ b/chrome/browser/ui/webui/about_ui.cc
@@ -743,12 +743,16 @@ class AboutDnsHandler : public base::RefCountedThreadSafe<AboutDnsHandler> {
   }
 
  private:
+  friend class base::RefCountedThreadSafe<AboutDnsHandler>;
+
   AboutDnsHandler(AboutUIHTMLSource* source, int request_id)
       : source_(source),
         request_id_(request_id) {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   }
 
+  virtual ~AboutDnsHandler() {}
+
   // Calls FinishOnUIThread() on completion.
   void StartOnUIThread() {
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));