Include <memory> in hb_wrapper.h because unique_ptr is used. (#16442)

chingjun · web-flow · commit f06ebba3e2ac · 2020-02-06T00:54:56.000-08:00
diff --git a/tools/font-subset/hb_wrappers.h b/tools/font-subset/hb_wrappers.h
@@ -6,6 +6,7 @@
 #define HB_WRAPPERS_H_
 
 #include <hb-subset.h>
+#include <memory>
 
 namespace HarfbuzzWrappers {
 struct hb_blob_deleter {
