deps: cherry-pick 081fce3 from V8 upstream

Original commit message:
  ThreadTicks::Now support for Solaris
  BUG=v8:5739

  Review-Url: https://codereview.chromium.org/2576903004
  Cr-Commit-Position: refs/heads/master@{#41771}

PR-URL: https://github.com/nodejs/node/pull/10342


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>