This is not really anything new. Most code already followed these
sniffs. This patch just fixes the remaining exceptions. Also:
* Remove PHPDoc blocks that don't add anything but just repeat the
strict types.
* Remove @file comments in favor of class-level comments.
* Add strict types where possible, most notably some `void`.
Change-Id: Iff6872dff68170b0fc4e82ac2ba3cad385e8773e
EventLogging::logEvent() was marked as deprecated at the beginning of
2021 in I0cfd07295d4b51ca4805c79a28a9a4bd64ff7cc9.
Bug: T318263
Change-Id: I2d89784cc249e97954c9be05169f3060fd69945f
