As suggested in I69ad209.
As far as I can tell the idea was to be able to pass logger-specific
configuration to the logger factory, e.g. to be able to toggle certain
things the loggers would do. But this is not used at the moment. There
is not much value in keeping unused code around. It can esaily be
introduced again later when it turns out it is needed.
Furthermore, I'm told most of the logging functionality should be
removed anyway. See T193051.
Change-Id: I6b1ddb2a65eacc0e096f2ba44922d63e63212a65
The code literally explains itself. The comments don't add anything
to this. They are more distracting because one must read them first
to understand they don't contain anything.
Change-Id: I6f152962ec634ae15d2bff4472e332453cb9b0bf
Changes:
- introduced new UserPreferencesChangeHandler class that listens to
PreferencesFormPreSave hook
- introduced wrapper for EventLogging extension plus NullLogger when
EventLogging extension is not availalbe
- when user changes PagePreview to disabled system will trigger
disabled event
Bug: T167365
Change-Id: I63faecb0495eb30a9fc2763e7ddf3944baf7f55a
