Update from https://crrev.com/316786

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

Index: third_party/harfbuzz-ng/src/hb-glib.cc
diff --git a/third_party/harfbuzz-ng/src/hb-glib.cc b/third_party/harfbuzz-ng/src/hb-glib.cc
index af43cab71130abb3977a3d577911dd30453b838f..61dff5e3d6f0f55de66d035a2e91fdcab1b04302 100644
--- a/third_party/harfbuzz-ng/src/hb-glib.cc
+++ b/third_party/harfbuzz-ng/src/hb-glib.cc
@@ -382,3 +382,14 @@ hb_glib_get_unicode_funcs (void)
   return const_cast<hb_unicode_funcs_t *> (&_hb_glib_unicode_funcs);
 }
 
+hb_blob_t *
+hb_glib_blob_create (GBytes *gbytes)
+{
+  gsize size = 0;
+  gconstpointer data = g_bytes_get_data (gbytes, &size);
+  return hb_blob_create ((const char *) data,
+			 size,
+			 HB_MEMORY_MODE_READONLY,
+			 g_bytes_ref (gbytes),
+			 (hb_destroy_func_t) g_bytes_unref);
+}