Move skeleton methods from AV to AbsC

The methods:

 * #render_to_body
 * #render_to_string
 * #_normalize_render

Haven't had anything specyfic to ActionView. This was common code which should belong to AbstractController

actionpack/lib/abstract_controller/rendering.rb

@@ -18,6 +18,12 @@ module AbstractController
       self.protected_instance_variables = []
     end
 
+    # Normalize arguments, options and then delegates render_to_body and
+    # sticks the result in self.response_body.
+    # :api: public
+    def render(*args, &block)
+    end
+
     # Raw rendering of a template to a string.
     #
     # It is similar to render, except that it does not
@@ -30,17 +36,15 @@ module AbstractController
     # overridden in order to still return a string.
     # :api: plugin
     def render_to_string(*args, &block)
+      options = _normalize_render(*args, &block)
+      render_to_body(options)
     end
 
     # Raw rendering of a template.
-    # :api: plugin
-    def render_to_body(options = {})
-    end
-
-    # Normalize arguments, options and then delegates render_to_body and
-    # sticks the result in self.response_body.
     # :api: public
-    def render(*args, &block)
+    def render_to_body(options = {})
+      _process_options(options)
+      _render_template(options)
     end
 
     # Return Content-Type of rendered content
@@ -83,5 +87,13 @@ module AbstractController
     def _process_options(options)
       options
     end
+
+    # Normalize args and options.
+    # :api: private
+    def _normalize_render(*args, &block)
+      options = _normalize_args(*args, &block)
+      _normalize_options(options)
+      options
+    end
   end
 end

actionview/lib/action_view/rendering.rb

@@ -84,20 +84,6 @@ module ActionView
       self.response_body = render_to_body(options)
     end
 
-    # Raw rendering of a template to a string.
-    # :api: public
-    def render_to_string(*args, &block)
-      options = _normalize_render(*args, &block)
-      render_to_body(options)
-    end
-
-    # Raw rendering of a template.
-    # :api: public
-    def render_to_body(options = {})
-      _process_options(options)
-      _render_template(options)
-    end
-
     # Find and renders a template based on the options given.
     # :api: private
     def _render_template(options) #:nodoc:
@@ -111,14 +97,6 @@ module ActionView
 
     private
 
-      # Normalize args and options.
-      # :api: private
-      def _normalize_render(*args, &block)
-        options = _normalize_args(*args, &block)
-        _normalize_options(options)
-        options
-      end
-
       # Normalize args by converting render "foo" to render :action => "foo" and
       # render "foo/bar" to render :file => "foo/bar".
       # :api: private