Proper fix for MockGDataSyncClient cleanup

chrome/browser/chromeos/gdata/mock_directory_change_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_MOCK_DIRECTORY_CHANGE_OBSERVER_H_
+#define CHROME_BROWSER_CHROMEOS_GDATA_MOCK_DIRECTORY_CHANGE_OBSERVER_H_
+#pragma once
+
+#include "chrome/browser/chromeos/gdata/gdata_file_system.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace gdata {
+
+// Mock for GDataFileSystemInterface::Observer::OnDirectoryChanged().
+class MockDirectoryChangeObserver : public GDataFileSystemInterface::Observer {
+ public:
+  MockDirectoryChangeObserver();
+  virtual ~MockDirectoryChangeObserver();
+
+  // GDataFileSystemInterface::Observer overrides.
+  MOCK_METHOD1(OnDirectoryChanged, void(const FilePath& directory_path));
+};
+
+}  // namespace gdata
+
+#endif  // CHROME_BROWSER_CHROMEOS_GDATA_MOCK_DIRECTORY_CHANGE_OBSERVER_H_