Fix missing visitation of FrameState in simplified lowering.
Fix missing visitation of FrameState in simplified lowering.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/918143002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26613}

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh