RefCounted types should not have public destructors, chromeos edition

chrome/browser/chromeos/extensions/file_browser_event_router.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_CHROMEOS_EXTENSIONS_FILE_BROWSER_EVENT_ROUTER_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_EVENT_ROUTER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 74 matching lines @@
   virtual void OnDocumentFeedFetched(int num_accumulated_entries) OVERRIDE;
 
  private:
   friend class FileBrowserEventRouterFactory;
 
   // Helper class for passing through file watch notification events.
   class FileWatcherDelegate : public base::files::FilePathWatcher::Delegate {
    public:
     explicit FileWatcherDelegate(FileBrowserEventRouter* router);
 
+   protected:
+    virtual ~FileWatcherDelegate() {}
+
    private:
     // base::files::FilePathWatcher::Delegate overrides.
     virtual void OnFilePathChanged(const FilePath& path) OVERRIDE;
     virtual void OnFilePathError(const FilePath& path) OVERRIDE;
 
     void HandleFileWatchOnUIThread(const FilePath& local_path, bool got_error);
 
     FileBrowserEventRouter* router_;
   };
 
@@ skipping 116 matching lines @@
 
   FileBrowserEventRouterFactory();
   virtual ~FileBrowserEventRouterFactory();
 
   // ProfileKeyedServiceFactory:
   virtual scoped_refptr<RefcountedProfileKeyedService> BuildServiceInstanceFor(
       Profile* profile) const OVERRIDE;
 };
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_BROWSER_EVENT_ROUTER_H_