v8: backport bd59e7452be from upstream v8

Original commit message:
    [PATCH] Merged: Make Object::GetOwnPropertyDescriptor() take a Name, not a String.

    Revision: b5e610c19208ef854755eec67011ca7aff008bf4

    NOTRY=true
    NOPRESUBMIT=true
    NOTREECHECKS=true
    TBR=vogelheim@chromium.org

    Bug:
    Change-Id: I396b559b28aab6afa138db747711e50cd0da3da7
    Reviewed-on: https://chromium-review.googlesource.com/513927


Reviewed-by: Michael Achenbach <machenbach@chromium.org>
    Cr-Commit-Position: refs/branch-heads/6.0@{#5}
    Cr-Branched-From: 97dbf624a5eeffb3a8df36d24cdb2a883137385f-refs/heads/6.0.286@{#1}
    Cr-Branched-From: 12e6f1cb5cd9616da7b9d4a7655c088778a6d415-refs/heads/master@{#45439}

PR-URL: https://github.com/nodejs/node/pull/13217


Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>