Bug 1412125, part 2 - Fix dom/ mode lines. r=qdot

This was automatically generated by the script modeline.py.

MozReview-Commit-ID: BgulzkGteAL

dom/html/HTMLSummaryElement.cpp

@@ -1,4 +1,5 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */