Roll HarfBuzz to 1.3.0

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

Index: third_party/harfbuzz-ng/src/hb-common.cc
diff --git a/third_party/harfbuzz-ng/src/hb-common.cc b/third_party/harfbuzz-ng/src/hb-common.cc
index 140ee0a57376f94d04b90ff627c4bcf64f149c78..3564e435570f2c81d6d4a7bd519d50df64a6dc79 100644
--- a/third_party/harfbuzz-ng/src/hb-common.cc
+++ b/third_party/harfbuzz-ng/src/hb-common.cc
@@ -88,7 +88,7 @@ hb_tag_from_string (const char *str, int len)
 /**
  * hb_tag_to_string:
  * @tag: 
- * @buf: (array fixed-size=4): 
+ * @buf: (out caller-allocates) (array fixed-size=4) (element-type uint8_t): 
  *
  * 
  *
@@ -507,6 +507,9 @@ hb_script_get_horizontal_direction (hb_script_t script)
     /* Unicode-8.0 additions */
     case HB_SCRIPT_OLD_HUNGARIAN:
 
+    /* Unicode-9.0 additions */
+    case HB_SCRIPT_ADLAM:
+
       return HB_DIRECTION_RTL;
   }