class ActionView::DependencyTracker

def self.register_tracker(extension, tracker)
  handler = Template.handler_for_extension(extension)
  if tracker.respond_to?(:supports_view_paths?)
    @trackers[handler] = tracker
  else
    @trackers[handler] = lambda { |name, template, _|
      tracker.call(name, template)
    }
  end
end