Create common CXML_Object base class for CXML_Content and CXML_Element.

They should each know what they are rather than having an
external ChildRecord struct to track the type.

Change-Id: Ic647ba45569764073e944d30af1a96dccdc29eb3
Reviewed-on: https://pdfium-review.googlesource.com/5210
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/core/fxcrt/xml/cxml_object.cpp b/core/fxcrt/xml/cxml_object.cpp
new file mode 100644
index 0000000000..61e88cb407
--- /dev/null
+++ b/core/fxcrt/xml/cxml_object.cpp
@@ -0,0 +1,25 @@
+// Copyright 2017 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "core/fxcrt/xml/cxml_object.h"
+
+CXML_Object::~CXML_Object() {}
+
+CXML_Content* CXML_Object::AsContent() {
+  return nullptr;
+}
+
+CXML_Element* CXML_Object::AsElement() {
+  return nullptr;
+}
+
+const CXML_Content* CXML_Object::AsContent() const {
+  return nullptr;
+}
+
+const CXML_Element* CXML_Object::AsElement() const {
+  return nullptr;
+}