RefCounted types should not have public destructors, chromeos edition

webkit/chromeos/fileapi/remote_file_system_proxy.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 WEBKIT_CHROMEOS_FILEAPI_REMOTE_FILE_SYSTEM_PROXY_H_
 #define WEBKIT_CHROMEOS_FILEAPI_REMOTE_FILE_SYSTEM_PROXY_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "webkit/fileapi/file_system_operation_interface.h"
 
 class GURL;
 
 namespace fileapi {
 
 typedef base::Callback<
     void(base::PlatformFileError result,
          const FilePath& platform_path,
          const scoped_refptr<webkit_blob::ShareableFileReference>& file_ref)>
     WritableSnapshotFile;
 
 // The interface class for remote file system proxy.
 class RemoteFileSystemProxyInterface :
     public base::RefCountedThreadSafe<RemoteFileSystemProxyInterface> {
  public:
-  virtual ~RemoteFileSystemProxyInterface() {}
-
   // Gets the file or directory info for given|path|.
   virtual void GetFileInfo(const GURL& path,
       const FileSystemOperationInterface::GetMetadataCallback& callback) = 0;
 
   // Copies a file or directory from |src_path| to |dest_path|. If
   // |src_path| is a directory, the contents of |src_path| are copied to
   // |dest_path| recursively. A new file or directory is created at
   // |dest_path| as needed.
   virtual void Copy(
       const GURL& src_path,
@@ skipping 50 matching lines @@
       const WritableSnapshotFile& callback) = 0;
 
   // Opens file for a give |path| with specified |flags| (see
   // base::PlatformFileFlags for details).
   virtual void OpenFile(
       const GURL& path,
       int flags,
       base::ProcessHandle peer_handle,
       const FileSystemOperationInterface::OpenFileCallback& callback) = 0;
   // TODO(zelidrag): More methods to follow as we implement other parts of FSO.
+
+ protected:
+  friend class base::RefCountedThreadSafe<RemoteFileSystemProxyInterface>;
+  virtual ~RemoteFileSystemProxyInterface() {}
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_CHROMEOS_FILEAPI_REMOTE_FILE_SYSTEM_PROXY_H_