register_tracker

# File actionview/lib/action_view/dependency_tracker.rb, line 17
    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