Merge pull request #19104 from y-yagi/fix_skip_filter

fix NameError in `skip_filter`. callback doesn't exist.

actionpack/lib/abstract_controller/callbacks.rb

@@ -70,7 +70,7 @@ module AbstractController
       end
 
       def skip_filter(*names)
-        ActiveSupport::Deprecation.warn("#{callback}_filter is deprecated and will be removed in Rails 5.1. Use #{callback}_action instead.")
+        ActiveSupport::Deprecation.warn("`skip_filter` is deprecated and will be removed in Rails 5.1. Use skip_before_action, skip_after_action or skip_around_action instead.")
         skip_action_callback(*names)
       end
 

actionpack/test/controller/filters_test.rb

@@ -1074,6 +1074,14 @@ class YieldingAroundFiltersTest < ActionController::TestCase
     end
   end
 
+  def test_deprecated_skip_filter
+    assert_deprecated do
+      Class.new(PostsController) do
+        skip_filter :clean_up
+      end
+    end
+  end
+
   protected
     def test_process(controller, action = "show")
       @controller = controller.is_a?(Class) ? controller.new : controller