Roll HarfBuzz to 1.2.6

third_party/harfbuzz-ng/src/hb-icu.cc

 /*
  * Copyright © 2009  Red Hat, Inc.
  * Copyright © 2009  Keith Stribley
  * 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
@@ skipping 18 matching lines @@
 
 #include "hb-private.hh"
 
 #include "hb-icu.h"
 
 #include "hb-unicode-private.hh"
 
 #include <unicode/uchar.h>
 #include <unicode/unorm.h>
 #include <unicode/ustring.h>
+#include <unicode/utf16.h>
 #include <unicode/uversion.h>
 
 
 hb_script_t
 hb_icu_script_to_script (UScriptCode script)
 {
   if (unlikely (script == USCRIPT_INVALID_CODE))
     return HB_SCRIPT_INVALID;
 
   return hb_script_from_string (uscript_getShortName (script), -1);
@@ skipping 312 matching lines @@
 
 #if U_ICU_VERSION_MAJOR_NUM >= 49
   if (!hb_atomic_ptr_get (&normalizer)) {
     UErrorCode icu_err = U_ZERO_ERROR;
     /* We ignore failure in getNFCInstace(). */
     (void) hb_atomic_ptr_cmpexch (&normalizer, NULL, unorm2_getNFCInstance (&icu_err));
   }
 #endif
   return const_cast<hb_unicode_funcs_t *> (&_hb_icu_unicode_funcs);
 }