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

chrome/browser/chromeos/gdata/gdata_download_observer.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_DOWNLOAD_OBSERVER_H__
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_DOWNLOAD_OBSERVER_H__
 #pragma once
 
 #include <map>
 
@@ skipping 100 matching lines @@
   // Creates UploadFileInfo and initializes it using DownloadItem*.
   scoped_ptr<UploadFileInfo> CreateUploadFileInfo(
       content::DownloadItem* download);
 
   // Callback invoked by GDataUploader when the upload associated with
   // |download_id| has completed. |error| indicated whether the
   // call was successful. This function invokes the MaybeCompleteDownload()
   // method on the DownloadItem to allow it to complete.
   void OnUploadComplete(int32 download_id,
                         base::PlatformFileError error,
-                        UploadFileInfo* upload_file_info);
+                        scoped_ptr<UploadFileInfo> upload_file_info);
 
   // Private data.
   // Use GDataUploader to trigger file uploads.
   GDataUploader* gdata_uploader_;
   // Observe the DownloadManager for new downloads.
   content::DownloadManager* download_manager_;
 
   // Temporary download location directory.
   FilePath gdata_tmp_download_path_;
 
   // Map of pending downloads.
   typedef std::map<int32, content::DownloadItem*> DownloadMap;
   DownloadMap pending_downloads_;
 
   base::WeakPtrFactory<GDataDownloadObserver> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GDataDownloadObserver);
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_DOWNLOAD_OBSERVER_H__