[arm64] serialize internal references via object visitor
[arm64] serialize internal references via object visitor

BUG=

Review URL: https://codereview.chromium.org/1020863003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#27311}

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