Define CHROME_PNG_READ_iCCP_sRGB_cHRM_gAMA

third_party/libpng/png.h

 /* png.h - header file for PNG reference library
  *
  * libpng version 1.2.45 - July 7, 2011
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
  * This code is released under the libpng license (See LICENSE, below)
  *
  * Authors and maintainers:
@@ skipping 832 matching lines @@
     * on which the image was created, normally in the range [1.0, 2.5].
     * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
     */
    float gamma PNG_DEPSTRUCT; /* gamma value of image, if (valid & PNG_INFO_gAMA) */
 #endif
 
 #ifdef PNG_sRGB_SUPPORTED
     /* GR-P, 0.96a */
     /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
    png_byte srgb_intent PNG_DEPSTRUCT; /* sRGB rendering intent [0, 1, 2, or 3] */
+#ifdef CHROME_PNG_READ_iCCP_sRGB_cHRM_gAMA
+    /* Set if cHRM or gAMA chunks were also seen in the PNG headers when
+     * sRGB and iCCP read support are both enabled. Values contained are
+     * chunk info->valid flags, viz., PNG_INFO_cHRM | PNG_INFO_gAMA.
+     */
+   png_uint_32 chroma_or_gamma;
+#endif
 #endif
 
 #ifdef PNG_TEXT_SUPPORTED
    /* The tEXt, and zTXt chunks contain human-readable textual data in
     * uncompressed, compressed, and optionally compressed forms, respectively.
     * The data in "text" is an array of pointers to uncompressed,
     * null-terminated C strings. Each chunk has a keyword that describes the
     * textual data contained in that chunk.  Keywords are not required to be
     * unique, and the text string may be empty.  Any number of text chunks may
     * be in an image.
@@ skipping 2921 matching lines @@
 
 #endif /* PNG_INTERNAL */
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* PNG_VERSION_INFO_ONLY */
 /* Do not put anything past this line */
 #endif /* PNG_H */