Split xfa_layout_appadapter

xfa/fxfa/parser/cxfa_traversestrategy_contentlayoutitem.h

+// Copyright 2016 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
+
+#ifndef XFA_FXFA_PARSER_CXFA_TRAVERSESTRATEGY_CONTENTLAYOUTITEM_H_
+#define XFA_FXFA_PARSER_CXFA_TRAVERSESTRATEGY_CONTENTLAYOUTITEM_H_
+
+#include "xfa/fxfa/parser/cxfa_contentlayoutitem.h"
+
+class CXFA_TraverseStrategy_ContentLayoutItem {
+ public:
+  static CXFA_ContentLayoutItem* GetFirstChild(
+      CXFA_ContentLayoutItem* pLayoutItem) {
+    return static_cast<CXFA_ContentLayoutItem*>(pLayoutItem->m_pFirstChild);
+  }
+
+  static CXFA_ContentLayoutItem* GetNextSibling(
+      CXFA_ContentLayoutItem* pLayoutItem) {
+    return static_cast<CXFA_ContentLayoutItem*>(pLayoutItem->m_pNextSibling);
+  }
+
+  static CXFA_ContentLayoutItem* GetParent(
+      CXFA_ContentLayoutItem* pLayoutItem) {
+    return static_cast<CXFA_ContentLayoutItem*>(pLayoutItem->m_pParent);
+  }
+};
+
+#endif  // XFA_FXFA_PARSER_CXFA_TRAVERSESTRATEGY_CONTENTLAYOUTITEM_H_