[FileAPI] Add file open ID and close callback

content/renderer/pepper/null_file_system_callback_dispatcher.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 CONTENT_RENDERER_PEPPER_NULL_FILE_SYSTEM_CALLBACK_DISPATCHER_H_
 #define CONTENT_RENDERER_PEPPER_NULL_FILE_SYSTEM_CALLBACK_DISPATCHER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 24 matching lines @@
   virtual void DidCreateSnapshotFile(
       const base::PlatformFileInfo& file_info,
       const base::FilePath& platform_path) OVERRIDE;
   virtual void DidReadDirectory(
       const std::vector<base::FileUtilProxy::Entry>& entries,
       bool has_more) OVERRIDE;
   virtual void DidOpenFileSystem(const std::string& name,
                                  const GURL& root) OVERRIDE;
   virtual void DidWrite(int64 bytes, bool complete) OVERRIDE;
   virtual void DidOpenFile(base::PlatformFile file,
+                           int file_open_id,
                            quota::QuotaLimitType quota_policy) OVERRIDE;
   virtual void DidFail(base::PlatformFileError platform_error) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NullFileSystemCallbackDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_NULL_FILE_SYSTEM_CALLBACK_DISPATCHER_H_