Move ActionController::Translation to AbstractController::Translation.

actionpack/lib/abstract_controller.rb

@@ -15,5 +15,6 @@ module AbstractController
   autoload :LocalizedCache
   autoload :Logger
   autoload :Rendering
+  autoload :Translation
   autoload :UrlFor
 end

actionpack/lib/abstract_controller/rendering.rb

@@ -42,7 +42,7 @@ def view_context
     # Delegates render_to_body and sticks the result in self.response_body.
     def render(*args, &block)
       if response_body
-        raise AbstractController::DoubleRenderError, "Can only render or redirect once per action"
+        raise AbstractController::DoubleRenderError
       end
 
       options = _normalize_options(*args, &block)

actionpack/lib/action_controller/translation.rb → actionpack/lib/abstract_controller/translation.rb

-module ActionController
+module AbstractController
   module Translation
     def translate(*args)
       I18n.translate(*args)

actionpack/lib/action_controller.rb

@@ -8,7 +8,6 @@ module ActionController
   autoload :Base
   autoload :Caching
   autoload :PolymorphicRoutes
-  autoload :Translation
   autoload :Metal
   autoload :Middleware
 

actionpack/lib/action_controller/base.rb

@@ -4,6 +4,7 @@ class Base < Metal
 
     include AbstractController::Callbacks
     include AbstractController::Layouts
+    include AbstractController::Translation
 
     include ActionController::Helpers
     helper :all # By default, all helpers should be included
@@ -33,7 +34,6 @@ class Base < Metal
     include ActionController::Streaming
     include ActionController::HttpAuthentication::Basic::ControllerMethods
     include ActionController::HttpAuthentication::Digest::ControllerMethods
-    include ActionController::Translation
 
     # Add instrumentations hooks at the bottom, to ensure they instrument
     # all the methods properly.