Roll HarfBuzz to 1.2.6

third_party/harfbuzz-ng/src/hb-fallback-shape.cc

 /*
  * Copyright © 2011  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 88 matching lines @@
    *
    * - Apply fallback kern.
    * - Handle Variation Selectors?
    * - Apply normalization?
    *
    * This will make the fallback shaper into a dumb "TrueType"
    * shaper which many people unfortunately still request.
    */
 
   hb_codepoint_t space;
-  bool has_space = (bool) font->get_glyph (' ', 0, &space);
+  bool has_space = (bool) font->get_nominal_glyph (' ', &space);
 
   buffer->clear_positions ();
 
   hb_direction_t direction = buffer->props.direction;
   hb_unicode_funcs_t *unicode = buffer->unicode;
   unsigned int count = buffer->len;
   hb_glyph_info_t *info = buffer->info;
   hb_glyph_position_t *pos = buffer->pos;
   for (unsigned int i = 0; i < count; i++)
   {
     if (has_space && unicode->is_default_ignorable (info[i].codepoint)) {
       info[i].codepoint = space;
       pos[i].x_advance = 0;
       pos[i].y_advance = 0;
       continue;
     }
-    font->get_glyph (info[i].codepoint, 0, &info[i].codepoint);
+    font->get_nominal_glyph (info[i].codepoint, &info[i].codepoint);
     font->get_glyph_advance_for_direction (info[i].codepoint,
                                            direction,
                                            &pos[i].x_advance,
                                            &pos[i].y_advance);
     font->subtract_glyph_origin_for_direction (info[i].codepoint,
                                                direction,
                                                &pos[i].x_offset,
                                                &pos[i].y_offset);
   }
 
   if (HB_DIRECTION_IS_BACKWARD (direction))
     hb_buffer_reverse (buffer);
 
   return true;
 }