Add missing requires for require 'action_dispatch/routing'

actionpack/lib/action_dispatch/routing.rb

 # encoding: UTF-8
 require 'active_support/core_ext/object/to_param'
 require 'active_support/core_ext/regexp'
+require 'active_support/dependencies/autoload'
 
 module ActionDispatch
   # The routing module provides URL rewriting in native Ruby. It's a way to

actionpack/lib/action_dispatch/routing/route_set.rb

 require 'action_dispatch/journey'
 require 'forwardable'
 require 'thread_safe'
+require 'active_support/concern'
 require 'active_support/core_ext/object/to_query'
 require 'active_support/core_ext/hash/slice'
 require 'active_support/core_ext/module/remove_method'
 require 'active_support/core_ext/array/extract_options'
 require 'action_controller/metal/exceptions'
+require 'action_dispatch/http/request'
 
 module ActionDispatch
   module Routing