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diff --git a/xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.h b/xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.h
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index 0000000000..ef084c075e
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+++ b/xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.h
@@ -0,0 +1,28 @@
+// Copyright 2014 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 _BC_GLOBALHISTOGRAMBINARIZER_H_
+#define _BC_GLOBALHISTOGRAMBINARIZER_H_
+class CBC_CommonBinarizer;
+class CBC_CommonBitArray;
+class CBC_CommonBitMatrix;
+class CBC_LuminanceSource;
+class CBC_GlobalHistogramBinarizer;
+class CBC_GlobalHistogramBinarizer  : public CBC_Binarizer
+{
+public:
+    CBC_GlobalHistogramBinarizer(CBC_LuminanceSource *source);
+    virtual ~CBC_GlobalHistogramBinarizer();
+
+    void InitArrays(FX_INT32 luminanceSize);
+    CBC_CommonBitMatrix *GetBlackMatrix(FX_INT32 &e);
+    CBC_CommonBitArray *GetBlackRow(FX_INT32 y, CBC_CommonBitArray *row, FX_INT32 &e);
+    static FX_INT32 EstimateBlackPoint(CFX_Int32Array &buckets, FX_INT32 &e);
+private:
+    CFX_ByteArray m_luminance;
+    CFX_Int32Array m_buckets;
+};
+#endif