SyncFS: Introduce RemoteSyncOperationResolver for directory operation support

webkit/fileapi/syncable/file_change.h

Index: webkit/fileapi/syncable/file_change.h
diff --git a/webkit/fileapi/syncable/file_change.h b/webkit/fileapi/syncable/file_change.h
index f2a12e481eb0aca1b6b5306750e93b4a4484ec6c..41359a1c6b432c62320cdbb9883ad2a4afc246f0 100644
--- a/webkit/fileapi/syncable/file_change.h
+++ b/webkit/fileapi/syncable/file_change.h
@@ -32,6 +32,11 @@ class WEBKIT_STORAGE_EXPORT FileChange {
   bool IsDirectory() const { return file_type_ == SYNC_FILE_TYPE_DIRECTORY; }
   bool IsTypeUnknown() const { return !IsFile() && !IsDirectory(); }
 
+  bool IsAddOrUpdateFile() const { return IsAddOrUpdate() && IsFile(); }
+  bool IsDeleteFile() const { return IsDelete() && IsFile(); }
+  bool IsAddDirectory() const { return IsAddOrUpdate() && IsDirectory(); }
+  bool IsDeleteDirectory() const { return IsDelete() && IsDirectory(); }
+
   ChangeType change() const { return change_; }
   SyncFileType file_type() const { return file_type_; }