What is this anonymous class?

pry.txt

pry> c = ObjectSpace.each_object.detect { |i| i.class.to_s == "#<Class:0xb8f4e33c>" }

pry> c
=> {:perform_caching=>true,
 :request_forgery_protection_token=>:authenticity_token,
 :allow_forgery_protection=>true,
 :relative_url_root=>nil,
 :logger=>
  #<ActiveSupport::TaggedLogging:0xbc9d972c...
 :cache_store=>
  #<ActiveSupport::Cache::FileStore:0xbc9d981c...
 :assets_dir=>"/vagrant/public",
 :javascripts_dir=>"/vagrant/public/javascripts",
 :stylesheets_dir=>"/vagrant/public/stylesheets",
 :asset_path=>nil,
 :asset_host=>nil}

pry> ls c
Enumerable#methods: 
  all?   collect         cycle   drop_while  each_slice        entries   find_all    flat_map  index_by  many?   max     min_by     none?      reduce        sort     take          to_set
  any?   collect_concat  detect  each_cons   each_with_index   exclude?  find_index  grep      inject    map     max_by  minmax     one?       reverse_each  sort_by  take_while    zip   
  chunk  count           drop    each_entry  each_with_object  find      first       group_by  lazy      map_to  min     minmax_by  partition  slice_before  sum      threaded_map
Nori::CoreExt::Hash#methods: normalize_param  to_params  to_xml_attributes
V8::Conversion::Hash#methods: to_v8
Hash#methods: 
  ==                 compare_by_identity   default        diff        encode_json  flatten     inspect  length              rassoc         reverse_merge!  slice            symbolize_keys!  to_liquid    to_xml                 
  as_json            compare_by_identity?  default=       each        eql?         has_key?    invert   member?             rehash         reverse_update  slice!           to_a             to_options   update                 
  assert_valid_keys  deep_dup              default_proc   each_key    except       has_value?  keep_if  merge               reject         select          store            to_gmaps4rails   to_options!  value?                 
  assoc              deep_merge            default_proc=  each_pair   except!      hash        key      merge!              reject!        select!         stringify_keys   to_h             to_param     values                 
  blank?             deep_merge!           delete         each_value  extract!     include?    key?     pretty_print        replace        shift           stringify_keys!  to_hash          to_query     values_at              
  clear              deep_symbolize_keys   delete_if      empty?      fetch        index       keys     pretty_print_cycle  reverse_merge  size            symbolize_keys   to_json          to_s         with_indifferent_access
ActiveSupport::OrderedHash#methods: encode_with  extractable_options?  nested_under_indifferent_access  to_yaml  to_yaml_type
ActiveSupport::OrderedOptions#methods: []  []=  method_missing  respond_to?
ActiveSupport::InheritableOptions#methods: inheritable_copy
ActiveSupport::Configurable::Configuration#methods: compile_methods!
#<Class:0xb8f4e33c>#methods: allow_forgery_protection  asset_host  asset_path  assets_dir  cache_store  javascripts_dir  logger  perform_caching  relative_url_root  request_forgery_protection_token  stylesheets_dir