Roll HarfBuzz to 1.3.4

third_party/harfbuzz-ng/src/hb-ot-layout-private.hh

 /*
  * Copyright © 2007,2008,2009  Red Hat, Inc.
  * Copyright © 2012,2013  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
@@ skipping 106 matching lines @@
 
 
 /*
  * hb_ot_layout_t
  */
 
 namespace OT {
   struct GDEF;
   struct GSUB;
   struct GPOS;
+  struct MATH;
 }
 
 struct hb_ot_layout_lookup_accelerator_t
 {
   template <typename TLookup>
   inline void init (const TLookup &lookup)
   {
     digest.init ();
     lookup.add_coverage (&digest);
   }
 
   inline void fini (void)
   {
   }
 
   inline bool may_have (hb_codepoint_t g) const {
     return digest.may_have (g);
   }
 
   private:
   hb_set_digest_t digest;
 };
 
 struct hb_ot_layout_t
 {
   hb_blob_t *gdef_blob;
   hb_blob_t *gsub_blob;
   hb_blob_t *gpos_blob;
+  hb_blob_t *math_blob;
 
   const struct OT::GDEF *gdef;
   const struct OT::GSUB *gsub;
   const struct OT::GPOS *gpos;
+  const struct OT::MATH *math;
 
   unsigned int gsub_lookup_count;
   unsigned int gpos_lookup_count;
 
   hb_ot_layout_lookup_accelerator_t *gsub_accels;
   hb_ot_layout_lookup_accelerator_t *gpos_accels;
 };
 
 
 HB_INTERNAL hb_ot_layout_t *
@@ skipping 440 matching lines @@
 }
 
 /* Make sure no one directly touches our props... */
 #undef unicode_props0
 #undef unicode_props1
 #undef lig_props
 #undef glyph_props
 
 
 #endif /* HB_OT_LAYOUT_PRIVATE_HH */