Make code compile with clang_use_chrome_plugin (part III)

xfa/fxbarcode/common/BC_WhiteRectangleDetector.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_FXBARCODE_COMMON_BC_WHITERECTANGLEDETECTOR_H_
 #define XFA_FXBARCODE_COMMON_BC_WHITERECTANGLEDETECTOR_H_
 
 #include "core/fxcrt/include/fx_basic.h"
 
 class CBC_CommonBitMatrix;
 class CBC_ResultPoint;
 
 class CBC_WhiteRectangleDetector {
  public:
-  CBC_WhiteRectangleDetector(CBC_CommonBitMatrix* image);
+  explicit CBC_WhiteRectangleDetector(CBC_CommonBitMatrix* image);
   CBC_WhiteRectangleDetector(CBC_CommonBitMatrix* image,
                              int32_t initSize,
                              int32_t x,
                              int32_t y);
   virtual ~CBC_WhiteRectangleDetector();
+
   virtual void Init(int32_t& e);
 
   CFX_ArrayTemplate<CBC_ResultPoint*>* Detect(int32_t& e);
 
  private:
-  int32_t Round(float d);
+  int32_t Round(FX_FLOAT d);
   CBC_ResultPoint* GetBlackPointOnSegment(FX_FLOAT aX,
                                           FX_FLOAT aY,
                                           FX_FLOAT bX,
                                           FX_FLOAT bY);
   int32_t DistanceL2(FX_FLOAT aX, FX_FLOAT aY, FX_FLOAT bX, FX_FLOAT bY);
   CFX_ArrayTemplate<CBC_ResultPoint*>* CenterEdges(CBC_ResultPoint* y,
                                                    CBC_ResultPoint* z,
                                                    CBC_ResultPoint* x,
                                                    CBC_ResultPoint* t) const;
 
   FX_BOOL ContainsBlackPoint(int32_t a,
                              int32_t b,
                              int32_t fixed,
                              FX_BOOL horizontal);
 
   static const int32_t INIT_SIZE = 30;
   static const int32_t CORR = 1;
 
   CBC_CommonBitMatrix* m_image;
   int32_t m_height;
   int32_t m_width;
   int32_t m_leftInit;
   int32_t m_rightInit;
   int32_t m_downInit;
   int32_t m_upInit;
 };
 
 #endif  // XFA_FXBARCODE_COMMON_BC_WHITERECTANGLEDETECTOR_H_