Add runtime and native entry tags

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 5ba48aa5d6e4d773bd883723589c4b1295b94ec4..d4482ea66c6b41f10544ee678714f52768da2548 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -2608,6 +2608,13 @@ class Library : public Object {
   void set_native_entry_resolver(Dart_NativeEntryResolver value) const {
     raw_ptr()->native_entry_resolver_ = value;
   }
+  Dart_NativeEntryReverseResolver native_entry_reverse_resolver() const {
+    return raw_ptr()->native_entry_reverse_resolver_;
+  }
+  void set_native_entry_reverse_resolver(
+      Dart_NativeEntryReverseResolver reverse_resolver) const {
+    raw_ptr()->native_entry_reverse_resolver_ = reverse_resolver;
+  }
 
   RawError* Patch(const Script& script) const;