Remove some fx_dib functions with unused parameters.

core/fxge/include/fx_font.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_FONT_H_
 #define CORE_FXGE_INCLUDE_FX_FONT_H_
 
 #include <map>
@@ skipping 556 matching lines @@
 };
 
 struct FXTEXT_GLYPHPOS {
   const CFX_GlyphBitmap* m_pGlyph;
   int m_OriginX;
   int m_OriginY;
   FX_FLOAT m_fOriginX;
   FX_FLOAT m_fOriginY;
 };
 
-void Color2Argb(FX_ARGB& argb,
-                uint32_t color,
-                int alpha_flag,
-                void* pIccTransform);
-
 FX_RECT FXGE_GetGlyphsBBox(const std::vector<FXTEXT_GLYPHPOS>& glyphs,
                            int anti_alias,
                            FX_FLOAT retinaScaleX = 1.0f,
                            FX_FLOAT retinaScaleY = 1.0f);
 
 CFX_ByteString GetNameFromTT(const uint8_t* name_table,
                              uint32_t name_table_size,
                              uint32_t name);
 
 int PDF_GetStandardFontName(CFX_ByteString* name);
 
 #endif  // CORE_FXGE_INCLUDE_FX_FONT_H_