1 files changed, 3 insertions, 27 deletions
diff --git a/actionpack/lib/action_dispatch/http/mime_type.rb b/actionpack/lib/action_dispatch/http/mime_type.rb
index b9121a577c..6b718e3682 100644
--- a/actionpack/lib/action_dispatch/http/mime_type.rb
+++ b/actionpack/lib/action_dispatch/http/mime_type.rb
@@ -45,32 +45,6 @@ module Mime
       return type if type.is_a?(Type)
       EXTENSION_LOOKUP.fetch(type.to_s) { |k| yield k }
     end
-
-    def const_missing(sym)
-      ext = sym.downcase
-      if Mime[ext]
-        ActiveSupport::Deprecation.warn(<<-MSG.squish)
-          Accessing mime types via constants is deprecated.
-          Please change `Mime::#{sym}` to `Mime[:#{ext}]`.
-        MSG
-        Mime[ext]
-      else
-        super
-      end
-    end
-
-    def const_defined?(sym, inherit = true)
-      ext = sym.downcase
-      if Mime[ext]
-        ActiveSupport::Deprecation.warn(<<-MSG.squish)
-          Accessing mime types via constants is deprecated.
-          Please change `Mime.const_defined?(#{sym})` to `Mime[:#{ext}]`.
-        MSG
-        true
-      else
-        super
-      end
-    end
   end
 
   # Encapsulates the notion of a mime type. Can be used at render time, for example, with:
@@ -304,6 +278,8 @@ module Mime
 
     def all?; false; end
 
+    # TODO Change this to private once we've dropped Ruby 2.2 support.
+    # Workaround for Ruby 2.2 "private attribute?" warning.
     protected
 
       attr_reader :string, :synonyms
@@ -321,7 +297,7 @@ module Mime
         end
       end
 
-      def respond_to_missing?(method, include_private = false) #:nodoc:
+      def respond_to_missing?(method, include_private = false)
         method.to_s.ends_with? "?"
       end
   end