51c9ae9 Add --strict_null_safety_checks to the Dart flag allowlist (flutter/engine#23144)

engine-flutter-autoroll · engine-flutter-autoroll · commit 1e8553785ebd · 2020-12-17T21:51:41.000Z
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
@@ -1 +1 @@
-bb9cac29a030b87e474296bffb3be0e4afc2881d
+51c9ae95664302249f89cfe227186b84c82463c9
