Merge CrossFileUtilHelper to FileUtilHelper as Copy() and Move().

webkit/fileapi/file_util_helper.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 WEBKIT_FILEAPI_FILE_UTIL_HELPER_H_
 #define WEBKIT_FILEAPI_FILE_UTIL_HELPER_H_
 
 #include "base/platform_file.h"
 
 namespace fileapi {
 
 class FileSystemFileUtil;
 class FileSystemOperationContext;
 class FileSystemPath;
 
 // A collection of static methods that are usually called by
 // FileSystemFileUtilProxy.  The method should be called on FILE thread.
 class FileUtilHelper {
  public:
+  static base::PlatformFileError Copy(
+      FileSystemOperationContext* context,
+      FileSystemFileUtil* src_file_util,
+      FileSystemFileUtil* dest_file_utile,
+      const FileSystemPath& src_root_path,
+      const FileSystemPath& dest_root_path);
+
+  static base::PlatformFileError Move(
+      FileSystemOperationContext* context,
+      FileSystemFileUtil* src_file_util,
+      FileSystemFileUtil* dest_file_utile,
+      const FileSystemPath& src_root_path,
+      const FileSystemPath& dest_root_path);
+
   static base::PlatformFileError Delete(
       FileSystemOperationContext* context,
       FileSystemFileUtil* file_util,
       const FileSystemPath& path,
       bool recursive);
 
  private:
   static base::PlatformFileError DeleteDirectoryRecursive(
       FileSystemOperationContext* context,
       FileSystemFileUtil* file_util,
       const FileSystemPath& path);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_UTIL_HELPER_H_