RefCounted types should not have public destructors, chrome/browser/ part 6

chrome/browser/chrome_quota_permission_context.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROME_QUOTA_PERMISSION_CONTEXT_H_
 #define CHROME_BROWSER_CHROME_QUOTA_PERMISSION_CONTEXT_H_
 
 #include "base/compiler_specific.h"
 #include "content/public/browser/quota_permission_context.h"
 
 class ChromeQuotaPermissionContext : public content::QuotaPermissionContext {
  public:
   ChromeQuotaPermissionContext();
-  virtual ~ChromeQuotaPermissionContext();
 
   // The callback will be dispatched on the IO thread.
   virtual void RequestQuotaPermission(
       const GURL& origin_url,
       quota::StorageType type,
       int64 new_quota,
       int render_process_id,
       int render_view_id,
       const PermissionCallback& callback) OVERRIDE;
 
   void DispatchCallbackOnIOThread(
       const PermissionCallback& callback,
       QuotaPermissionResponse response);
+
+ private:
+  virtual ~ChromeQuotaPermissionContext();
 };
 
 #endif  // CHROME_BROWSER_CHROME_QUOTA_PERMISSION_CONTEXT_H_