Document timestamp caveat in FileSystem API move operation.

storage/browser/fileapi/file_system_operation.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 STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_H_
 #define STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 279 matching lines @@
   // comment for details.
   //
   // For recursive case this internally creates new FileSystemOperations and
   // calls:
   // - ReadDirectory, MoveFileLocal, CreateDirectory and Remove
   //   for same-filesystem case, or
   // - ReadDirectory, CreateSnapshotFile and Remove on source filesystem and
   //   CopyInForeignFile and CreateDirectory on dest filesystem
   //   for cross-filesystem case.
   //
+  // TODO(crbug.com/171284): Restore directory timestamps after the Move
+  //                         operation.
   virtual void Move(const FileSystemURL& src_path,
                     const FileSystemURL& dest_path,
                     CopyOrMoveOption option,
                     const StatusCallback& callback) = 0;
 
   // Checks if a directory is present at |path|.
   virtual void DirectoryExists(const FileSystemURL& path,
                                const StatusCallback& callback) = 0;
 
   // Checks if a file is present at |path|.
@@ skipping 188 matching lines @@
     kOperationOpenFile,
     kOperationCloseFile,
     kOperationGetLocalPath,
     kOperationCancel,
   };
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_FILEAPI_FILE_SYSTEM_OPERATION_H_