Implement SyncFileSystemService::GetFileSyncStatus method

webkit/fileapi/syncable/sync_file_status.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_SYNCABLE_SYNC_FILE_STATUS_H_
+#define WEBKIT_FILEAPI_SYNCABLE_SYNC_FILE_STATUS_H_
+
+namespace fileapi {
+
+enum SyncFileStatus {
+  // The file has unknown sync status (e.g. the file is missing or there
+  // was an error while retrieving the sync status for the file).
+  SYNC_FILE_STATUS_UNKNOWN,
+
+  // The file has no pending local changes (may have pending remote changes
+  // though).
+  SYNC_FILE_STATUS_SYNCED,
+
+  // The file has pending local changes that haven't been reflected to the
+  // remote side.
+  SYNC_FILE_STATUS_HAS_PENDING_CHANGES,
+
+  // The file is in conflicting state.
+  SYNC_FILE_STATUS_CONFLICTING,
+};
+
+}  // namespace fileapi
+
+#endif  // WEBKIT_FILEAPI_SYNCABLE_SYNC_FILE_STATUS_H_