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

chrome/browser/chromeos/gdata/mock_gdata_file_system.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_MOCK_GDATA_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_MOCK_GDATA_FILE_SYSTEM_H_
 #pragma once
 
 #include <string>
 
@@ skipping 68 matching lines @@
   MOCK_METHOD2(ReadDirectoryByPathAsync,
                void(const FilePath& file_path,
                     const ReadDirectoryCallback& callback));
   MOCK_METHOD1(RequestDirectoryRefresh,
                void(const FilePath& file_path));
   MOCK_METHOD1(GetAvailableSpace,
                void(const GetAvailableSpaceCallback& callback));
   MOCK_METHOD3(SetPinState, void(const FilePath&,
                                  bool,
                                  const FileOperationCallback& callback));
-  MOCK_METHOD4(AddUploadedFile,
+  MOCK_METHOD5(AddUploadedFile,
                void(const FilePath& file,
                     DocumentEntry* entry,
                     const FilePath& file_content_path,
-                    GDataCache::FileOperationType cache_operation));
+                    GDataCache::FileOperationType cache_operation,
+                    const base::Closure& callback));
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_MOCK_GDATA_FILE_SYSTEM_H_