Remove default arguments from IFX_RenderDeviceDriver.

core/fxge/include/fx_dib.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 CORE_FXGE_INCLUDE_FX_DIB_H_
 #define CORE_FXGE_INCLUDE_FX_DIB_H_
 
 #include <memory>
@@ skipping 136 matching lines @@
 #define FXARGB_TODIB(argb) (argb)
 #define FXCMYK_TODIB(cmyk)                                    \
   ((uint8_t)((cmyk) >> 24) | ((uint8_t)((cmyk) >> 16)) << 8 | \
    ((uint8_t)((cmyk) >> 8)) << 16 | ((uint8_t)(cmyk) << 24))
 #define FXARGB_TOBGRORDERDIB(argb)                       \
   ((uint8_t)(argb >> 16) | ((uint8_t)(argb >> 8)) << 8 | \
    ((uint8_t)(argb)) << 16 | ((uint8_t)(argb >> 24) << 24))
 #define FXGETFLAG_COLORTYPE(flag) (uint8_t)((flag) >> 8)
 #define FXGETFLAG_ALPHA_FILL(flag) (uint8_t)(flag)
 #define FXGETFLAG_ALPHA_STROKE(flag) (uint8_t)((flag) >> 16)
-#define FXSETFLAG_ALPHA_FILL(flag, val) flag = ((val) | (flag & 0xffffff00))
 
 class CFX_DIBSource {
  public:
   virtual ~CFX_DIBSource();
 
   int GetWidth() const { return m_Width; }
   int GetHeight() const { return m_Height; }
 
   FXDIB_Format GetFormat() const {
     return (FXDIB_Format)(m_AlphaFlag * 0x100 + m_bpp);
@@ skipping 491 matching lines @@
   int m_Status;
   FX_RECT m_ClipBox;
   uint32_t m_Flags;
   int m_AlphaFlag;
   void* m_pIccTransform;
   FX_BOOL m_bRgbByteOrder;
   int m_BlendType;
 };
 
 #endif  // CORE_FXGE_INCLUDE_FX_DIB_H_