* `is_privacy_policy()` template tag
* `privacy-policy.php` template
* `.privacy-policy` body class
* `.menu-item-privacy-policy` menu item class
Props garrett-eclipse, birgire, xkon, Clorith.
Fixes#44005.
git-svn-id: https://develop.svn.wordpress.org/trunk@44966 602fd350-edb4-49c9-b593-d223f7449a82