Cleanup forward declarations.

xfa/src/fxbarcode/qrcode/BC_QRCoderEncoder.h

 // 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 XFA_SRC_FXBARCODE_QRCODE_BC_QRCODERENCODER_H_
 #define XFA_SRC_FXBARCODE_QRCODE_BC_QRCODERENCODER_H_
 
 #include "core/include/fxcrt/fx_basic.h"
 #include "core/include/fxcrt/fx_string.h"
 
-class Make_Pair;
 class CBC_QRCoder;
 class CBC_QRCoderErrorCorrectionLevel;
 class CBC_QRCoderMode;
 class CBC_QRCoderBitVector;
 class CBC_CommonByteArray;
 class CBC_CommonByteMatrix;
 
 class CBC_QRCoderEncoder {
  private:
   const static int32_t m_alphaNumbericTable[96];
@@ skipping 101 matching lines @@
   static void SplitString(const CFX_ByteString& content, CFX_PtrArray& result);
   static void AppendDataModeLenghInfo(CFX_PtrArray& splitResult,
                                       CBC_QRCoderBitVector& headerAndDataBits,
                                       CBC_QRCoderMode* tempMode,
                                       CBC_QRCoder* qrCode,
                                       CFX_ByteString& encoding,
                                       int32_t& e);
 };
 
 #endif  // XFA_SRC_FXBARCODE_QRCODE_BC_QRCODERENCODER_H_