Cleanup forward declarations.

xfa/src/fxbarcode/qrcode/BC_QRDetector.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_QRDETECTOR_H_
 #define XFA_SRC_FXBARCODE_QRCODE_BC_QRDETECTOR_H_
 
 #include "core/include/fxcrt/fx_basic.h"
 
 class CBC_ResultPoint;
 class CBC_CommonBitMatrix;
 class CBC_QRDetectorResult;
 class CBC_QRFinderPatternInfo;
 class CBC_QRAlignmentPattern;
-class CBC_QRFinderPatternFinder;
-class CBC_QRCoderVersion;
-class CBC_QRGridSampler;
-class CBC_QRAlignmentPatternFinder;
-class CBC_QRAlignmentPattern;
 
 class CBC_QRDetector {
  private:
   CBC_CommonBitMatrix* m_image;
 
  public:
   CBC_QRDetector(CBC_CommonBitMatrix* image);
   virtual ~CBC_QRDetector();
 
   CBC_CommonBitMatrix* GetImage();
@@ skipping 27 matching lines @@
   static CBC_CommonBitMatrix* SampleGrid(CBC_CommonBitMatrix* image,
                                          CBC_ResultPoint* topLeft,
                                          CBC_ResultPoint* topRight,
                                          CBC_ResultPoint* bottomLeft,
                                          CBC_ResultPoint* alignmentPattern,
                                          int32_t dimension,
                                          int32_t& e);
 };
 
 #endif  // XFA_SRC_FXBARCODE_QRCODE_BC_QRDETECTOR_H_