* OutputPage::setSquidMaxage(); deprecated in 1.27
* OutputPage::readOnlyPage(); deprecated in 1.25
* OutputPage::rateLimited(); deprecated in 1.25
+ * Additionally, the protected OutputPage::$mExtStyles array, only accessed through
+ the above and with no known uses, was removed.
* The no-op method Skin::showIPinHeader(), deprecated in 1.27, was removed.
* \ObjectFactory (no namespace) is deprecated, the namespaced \Wikimedia\ObjectFactory
from the wikimedia/object-factory library should be used instead.