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diff --git a/xfa/fde/css/cfde_cssselector.h b/xfa/fde/css/cfde_cssselector.h
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index 0000000000..18a7c340e5
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+++ b/xfa/fde/css/cfde_cssselector.h
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+// 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
+
+#ifndef XFA_FDE_CSS_CFDE_CSSSELECTOR_H_
+#define XFA_FDE_CSS_CFDE_CSSSELECTOR_H_
+
+#include <memory>
+#include <utility>
+
+#include "core/fxcrt/fx_string.h"
+#include "xfa/fde/css/fde_css.h"
+
+class CFDE_CSSSelector {
+ public:
+  static std::unique_ptr<CFDE_CSSSelector> FromString(const FX_WCHAR* psz,
+                                                      int32_t iLen);
+
+  CFDE_CSSSelector(FDE_CSSSelectorType eType,
+                   const FX_WCHAR* psz,
+                   int32_t iLen,
+                   bool bIgnoreCase);
+  ~CFDE_CSSSelector();
+
+  FDE_CSSSelectorType GetType() const;
+  uint32_t GetNameHash() const;
+  CFDE_CSSSelector* GetNextSelector() const;
+  std::unique_ptr<CFDE_CSSSelector> ReleaseNextSelector();
+
+  void SetNext(std::unique_ptr<CFDE_CSSSelector> pNext) {
+    m_pNext = std::move(pNext);
+  }
+
+ private:
+  void SetType(FDE_CSSSelectorType eType) { m_eType = eType; }
+
+  FDE_CSSSelectorType m_eType;
+  uint32_t m_dwHash;
+  std::unique_ptr<CFDE_CSSSelector> m_pNext;
+};
+
+#endif  // XFA_FDE_CSS_CFDE_CSSSELECTOR_H_