RefCounted types should not have public destructors

chrome/browser/extensions/api/media_gallery/media_gallery_api.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.
 
 // Defines the Chrome Extensions Media Galleries API functions for accessing
 // user's media files, as specified in the extension API JSON.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERY_MEDIA_GALLERY_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERY_MEDIA_GALLERY_API_H_
 #pragma once
 
 #include "chrome/browser/extensions/extension_function.h"
 
 namespace extensions {
 
 class GetMediaFileSystemsFunction : public SyncExtensionFunction {
  public:
+  DECLARE_EXTENSION_FUNCTION_NAME(
+      "experimental.mediaGalleries.getMediaFileSystems")
+
+ protected:
   virtual ~GetMediaFileSystemsFunction();
   virtual bool RunImpl() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME(
-      "experimental.mediaGalleries.getMediaFileSystems")
 };
 
 class OpenMediaGalleryManagerFunction : public SyncExtensionFunction {
  public:
+  DECLARE_EXTENSION_FUNCTION_NAME(
+      "experimental.mediaGalleries.openMediaGalleryManager")
+
+ protected:
   virtual ~OpenMediaGalleryManagerFunction();
   virtual bool RunImpl() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME(
-      "experimental.mediaGalleries.openMediaGalleryManager")
 };
 
 class AssembleMediaFileFunction : public SyncExtensionFunction {
  public:
+  DECLARE_EXTENSION_FUNCTION_NAME(
+      "experimental.mediaGalleries.assembleMediaFile")
+
+ protected:
   virtual ~AssembleMediaFileFunction();
   virtual bool RunImpl() OVERRIDE;
-  DECLARE_EXTENSION_FUNCTION_NAME(
-      "experimental.mediaGalleries.assembleMediaFile")
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MEDIA_GALLERY_MEDIA_GALLERY_API_H_