Roll HarfBuzz to 1.2.6

third_party/harfbuzz-ng/src/hb-deprecated.h

 /*
  * Copyright © 2013  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
  * all copies of this software.
@@ skipping 26 matching lines @@
 
 HB_BEGIN_DECLS
 
 #ifndef HB_DISABLE_DEPRECATED
 
 #define HB_SCRIPT_CANADIAN_ABORIGINAL           HB_SCRIPT_CANADIAN_SYLLABICS
 
 #define HB_BUFFER_FLAGS_DEFAULT                 HB_BUFFER_FLAG_DEFAULT
 #define HB_BUFFER_SERIALIZE_FLAGS_DEFAULT       HB_BUFFER_SERIALIZE_FLAG_DEFAULT
 
+typedef hb_bool_t (*hb_font_get_glyph_func_t) (hb_font_t *font, void *font_data,
+                                               hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+                                               hb_codepoint_t *glyph,
+                                               void *user_data);
+
+HB_EXTERN void
+hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
+                              hb_font_get_glyph_func_t func,
+                              void *user_data, hb_destroy_func_t destroy);
+
 #endif
 
 HB_END_DECLS
 
 #endif /* HB_DEPRECATED_H */