gdata: Implement periodic file system update checks.

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 "chrome/browser/chromeos/gdata/gdata_file_system.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace gdata {
 
 // Mock for GDataFileSystemInterface.
 class MockGDataFileSystem : public GDataFileSystemInterface {
  public:
   MockGDataFileSystem();
   virtual ~MockGDataFileSystem();
 
   // GDataFileSystemInterface overrides.
   MOCK_METHOD0(Initialize, void());
   MOCK_METHOD1(AddObserver, void(Observer* observer));
   MOCK_METHOD1(RemoveObserver, void(Observer* observer));
+  MOCK_METHOD0(StartUpdates, void());
+  MOCK_METHOD0(StopUpdates, void());
   MOCK_METHOD1(Authenticate, void(const AuthStatusCallback& callback));
   MOCK_METHOD2(FindEntryByResourceIdSync, void(const std::string& resource_id,
                                                FindEntryDelegate* delegate));
   MOCK_METHOD3(TransferFile, void(const FilePath& local_file_path,
                                   const FilePath& remote_dest_file_path,
                                   const FileOperationCallback& callback));
   MOCK_METHOD3(Copy, void(const FilePath& src_file_path,
                           const FilePath& dest_file_path,
                           const FileOperationCallback& callback));
   MOCK_METHOD3(Move, void(const FilePath& src_file_path,
@@ skipping 51 matching lines @@
   MOCK_METHOD4(AddUploadedFile, void(const FilePath& file,
                                      DocumentEntry* entry,
                                      const FilePath& file_content_path,
                                      FileOperationType cache_operation));
   MOCK_METHOD0(hide_hosted_documents, bool());
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_MOCK_GDATA_FILE_SYSTEM_H_