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diff --git a/fxjs/cjs_globalvariablearray.h b/fxjs/cjs_globalvariablearray.h
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+++ b/fxjs/cjs_globalvariablearray.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 FXJS_CJS_GLOBALVARIABLEARRAY_H_
+#define FXJS_CJS_GLOBALVARIABLEARRAY_H_
+
+#include <memory>
+#include <vector>
+
+class CJS_KeyValue;
+
+class CJS_GlobalVariableArray {
+ public:
+  CJS_GlobalVariableArray();
+  ~CJS_GlobalVariableArray();
+
+  void Add(CJS_KeyValue* p);
+  int Count() const;
+  CJS_KeyValue* GetAt(int index) const;
+  void Copy(const CJS_GlobalVariableArray& array);
+
+ private:
+  std::vector<std::unique_ptr<CJS_KeyValue>> m_Array;
+};
+
+#endif  // FXJS_CJS_GLOBALVARIABLEARRAY_H_