Merge _details_defaults and details_for_render

actionpack/lib/abstract_controller/details_cache.rb

@@ -34,7 +34,7 @@ module AbstractController
     end
 
     def render_to_body(*args)
-      Thread.current[:format_locale_key] = HashKey.get(self.class, _details_defaults)
+      Thread.current[:format_locale_key] = HashKey.get(self.class, details_for_render)
       super
     end
 

actionpack/lib/abstract_controller/rendering.rb

@@ -168,12 +168,12 @@ module AbstractController
       end
     end
 
-    def _details_defaults
+    def details_for_render
       { :formats => formats, :locale => [I18n.locale] }
     end
 
     def _normalize_details(options)
-      details = _details_defaults
+      details = details_for_render
       details[:formats] = Array(options[:format]) if options[:format]
       details[:locale]  = Array(options[:locale]) if options[:locale]
       details

actionpack/lib/action_controller/metal/rendering.rb

@@ -27,10 +27,6 @@ module ActionController
         super
       end
 
-      def details_for_render
-        {:formats => formats}
-      end
-
       def format_for_text
         formats.first
       end