Pepper: Move FileRef to the "new" resource proxy.

ppapi/proxy/file_io_resource.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 PPAPI_PROXY_FILE_IO_RESOURCE_H_
 #define PPAPI_PROXY_FILE_IO_RESOURCE_H_
 
 #include <string>
 
 #include "ppapi/c/private/pp_file_handle.h"
 #include "ppapi/proxy/connection.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/shared_impl/file_io_state_manager.h"
+#include "ppapi/shared_impl/scoped_pp_resource.h"
 #include "ppapi/thunk/ppb_file_io_api.h"
 
 namespace ppapi {
 
 class TrackedCallback;
 
 namespace proxy {
 
 class PPAPI_PROXY_EXPORT FileIOResource
     : public PluginResource,
@@ skipping 105 matching lines @@
                                    const ResourceMessageReplyParams& params);
   void OnPluginMsgRequestOSFileHandleComplete(
       scoped_refptr<TrackedCallback> callback,
       PP_FileHandle* output_handle,
       const ResourceMessageReplyParams& params);
 
   PP_FileHandle file_handle_;
   PP_FileSystemType file_system_type_;
   FileIOStateManager state_manager_;
 
+  ScopedPPResource file_ref_;
+
   DISALLOW_COPY_AND_ASSIGN(FileIOResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_FILE_IO_RESOURCE_H_