Move ActionController::Railties::RoutesHelpers and...

Move ActionController::Railties::RoutesHelpers and ActionMailer::Railties::RoutesHelper to AbstractController::Railties::RoutesHelpers

actionmailer/lib/action_mailer/railtie.rb

 require "action_mailer"
 require "rails"
-require "action_mailer/railties/routes_helpers"
+require "abstract_controller/railties/routes_helpers"
 
 module ActionMailer
   class Railtie < Rails::Railtie
@@ -19,7 +19,7 @@ class Railtie < Rails::Railtie
       options.stylesheets_dir ||= paths.public.stylesheets.to_a.first
 
       ActiveSupport.on_load(:action_mailer) do
-        extend ::ActionMailer::Railties::RoutesHelpers.with(app.routes)
+        extend ::AbstractController::Railties::RoutesHelpers.with(app.routes)
         include app.routes.mounted_helpers(:app)
         options.each { |k,v| send("#{k}=", v) }
       end

actionmailer/lib/action_mailer/railties/routes_helpers.rb → actionpack/lib/abstract_controller/railties/routes_helpers.rb

-module ActionMailer
+module AbstractController
   module Railties
     module RoutesHelpers
       def self.with(routes)

actionpack/lib/action_controller/railtie.rb

@@ -4,7 +4,7 @@
 require "action_view/railtie"
 require "active_support/deprecation/proxy_wrappers"
 require "active_support/deprecation"
-require "action_controller/railties/routes_helpers"
+require "abstract_controller/railties/routes_helpers"
 
 module ActionController
   class Railtie < Rails::Railtie
@@ -51,7 +51,7 @@ class Railtie < Rails::Railtie
       options.helpers_path         ||= paths.app.helpers.to_a
 
       ActiveSupport.on_load(:action_controller) do
-        extend ::ActionController::Railties::RoutesHelpers.with(app.routes)
+        extend ::AbstractController::Railties::RoutesHelpers.with(app.routes)
         include app.routes.mounted_helpers(:app)
         options.each { |k,v| send("#{k}=", v) }
       end

actionpack/lib/action_controller/railties/routes_helpers.rb

-module ActionController
-  module Railties
-    module RoutesHelpers
-      def self.with(routes)
-        Module.new do
-          define_method(:inherited) do |klass|
-            super(klass)
-            if namespace = klass.parents.detect {|m| m.respond_to?(:_railtie) }
-              routes = namespace._railtie.routes
-            end
-            klass.send(:include, routes.url_helpers)
-          end
-        end
-      end
-    end
-  end
-end