PPAPI: Add PluginPrivateFileSystem

ppapi/proxy/file_system_resource.h

 // Copyright (c) 2013 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 PPAPI_PROXY_FILE_SYSTEM_RESOURCE_H_
 #define PPAPI_PROXY_FILE_SYSTEM_RESOURCE_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 47 matching lines @@
                     const ResourceMessageReplyParams& params);
 
   // Called when the host has responded to our InitIsolatedFileSystem request.
   void InitIsolatedFileSystemComplete(
       const base::Callback<void(int32_t)>& callback,
       const ResourceMessageReplyParams& params);
 
   PP_FileSystemType type_;
   bool called_open_;
   uint32_t callback_count_;
+  int32_t callback_result_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_FILE_SYSTEM_RESOURCE_H_