Automated tests for the below commit have been missing.Would it be possible to add test coverage to avoid regressions in future?

CL: https://chromium.googlesource.com/v8/v8/+/c30f09304a88c981c8637462c257add88ae09f90

Ref Bug: 
https://bugs.chromium.org/p/chromium/issues/detail?id=728583

Thank you!