gdata: Convert GDataFileSystem::AddUploadFile() to asynchronous.

chrome/browser/chromeos/gdata/gdata_upload_file_info.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_GDATA_GDATA_UPLOAD_FILE_INFO_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_UPLOAD_FILE_INFO_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 60 matching lines @@
   bool upload_paused;  // Whether this file's upload has been paused.
 
   bool should_retry_file_open;  // Whether we should retry opening this file.
   int num_file_open_tries;  // Number of times we've tried to open this file.
 
   // Will be set once the upload is complete.
   scoped_ptr<DocumentEntry> entry;
 
   // Callback to be invoked once the upload has completed.
   typedef base::Callback<void(base::PlatformFileError error,
-      UploadFileInfo* upload_file_info)> UploadCompletionCallback;
+      scoped_ptr<UploadFileInfo> upload_file_info)> UploadCompletionCallback;
   UploadCompletionCallback completion_callback;
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_UPLOAD_FILE_INFO_H_