port 679d9503(r34608)

  original commit message:
  According to https://www.w3.org/TR/html5/obsolete.html#dom-document-all,
  comparisons of document.all to other values such as strings or objects,
  are unaffected. In fact document.all only gets special treatment in
  comparisons with null or undefined according to HTML. Especially setting
  the undetectable doesn't make two distinct JSReceivers equal.

BUG=

Review URL: https://codereview.chromium.org/1784763002

Cr-Commit-Position: refs/heads/master@{#34650}