Roll HarfBuzz to 1.4.6

third_party/harfbuzz-ng/src/hb-ot-shape-complex-indic-table.cc

 /* == Start of generated table == */
 /*
  * The following table is generated by running:
  *
  *   ./gen-indic-table.py IndicSyllabicCategory.txt IndicPositionalCategory.txt Blocks.txt
  *
  * on files with these headers:
  *
  * # IndicSyllabicCategory-9.0.0.txt
  * # Date: 2016-05-21, 02:46:00 GMT [RP]
@@ skipping 404 matching lines @@
       if (hb_in_range (u, 0x2070u, 0x2087u)) return indic_table[u - 0x2070u + indic_offset_0x2070u];
       if (unlikely (u == 0x25CCu)) return _(CP,x);
       break;
 
     case 0xAu:
       if (hb_in_range (u, 0xA8E0u, 0xA8F7u)) return indic_table[u - 0xA8E0u + indic_offset_0xa8e0u];
       if (hb_in_range (u, 0xA9E0u, 0xA9FFu)) return indic_table[u - 0xA9E0u + indic_offset_0xa9e0u];
       if (hb_in_range (u, 0xAA60u, 0xAA7Fu)) return indic_table[u - 0xAA60u + indic_offset_0xaa60u];
       break;
 
+    case 0x11u:
+      // According to ScriptExtensions.txt, these Grantha marks may also be used in Tamil,
+      // so the Indic shaper needs to know their categories.
+      if (unlikely (u == 0x11303)) return _(Vs,R);
+      if (unlikely (u == 0x1133c)) return _(N,B);
+      break;
+
     default:
       break;
   }
   return _(x,x);
 }
 
 #undef _
 
 #undef ISC_A
 #undef ISC_Bi
@@ skipping 40 matching lines @@
 #undef IMC_R
 #undef IMC_T
 #undef IMC_TB
 #undef IMC_TBR
 #undef IMC_TL
 #undef IMC_TLR
 #undef IMC_TR
 #undef IMC_VOL
 
 /* == End of generated table == */