port fc5c7e04 (r33172)

  original commit message:
  There's no reason to have JavaScript wrappers for those accessors,
  since the meat is already in hand-written native code (via %_DateField).
  First step now to put them into native builtins. Next step will be to
  completely remove %_DateField.

BUG=

Review URL: https://codereview.chromium.org/1576813003

Cr-Commit-Position: refs/heads/master@{#33196}