Roll HarfBuzz to 1.4.6

third_party/harfbuzz-ng/src/hb-ot-math.cc

 /*
  * Copyright © 2016  Igalia S.L.
  *
  *  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.
  *
  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  *
  * Igalia Author(s): Frédéric Wang
  */
 
 #include "hb-open-type-private.hh"
 
+#include "hb-ot-layout-private.hh"
 #include "hb-ot-math-table.hh"
 
-HB_SHAPER_DATA_ENSURE_DECLARE(ot, face)
-
 static inline const OT::MATH&
 _get_math (hb_face_t *face)
 {
   if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return OT::Null(OT::MATH);
   hb_ot_layout_t * layout = hb_ot_layout_from_face (face);
   return *(layout->math.get ());
 }
 
 /*
  * OT::MATH
@@ skipping 202 matching lines @@
                                hb_ot_math_glyph_part_t *parts, /* OUT */
                                hb_position_t *italics_correction /* OUT */)
 {
   const OT::MATH &math = _get_math (font->face);
   return math.get_math_variants().get_glyph_parts (glyph, direction, font,
                                                    start_offset,
                                                    parts_count,
                                                    parts,
                                                    italics_correction);
 }