deps: cherry-pick 814577e from upstream V8

Original commit message:

    [tracing] allow embedders to provide own tracing timestamps

    Make it possible for embedders to provide their own tracing timetamps by
    providing an overridable virtual function on V8's tracing controller.

    Bug:
    Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
    Change-Id: I727e633cb7f63d4b41c2e427ecca3c9174c90bfe
    Reviewed-on: https://chromium-review.googlesource.com/847690


Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Fadi Meawad <fmeawad@chromium.org>
    Commit-Queue: Ali Ijaz Sheikh <ofrobots@google.com>
    Cr-Commit-Position: refs/heads/master@{#50489}

Refs: https://github.com/v8/v8/commit/814577e3fd097ef772fd6d92a1ad3abd934506e6
Refs: https://github.com/nodejs/node/issues/17349
PR-URL: https://github.com/nodejs/node/pull/18196
Refs: https://github.com/nodejs/node/pull/18360


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Andreas Madsen <amwebdk@gmail.com>