Refactor serialized types to be partially defined as custom properties

Many of the methods defined in `AttributeMethods::Serialization` can be
refactored onto this type as well, but this is a reasonable small step.
Removes the `Type` class, and the need for `decorate_columns` to handle
serialized types.

1 files changed, 2 insertions, 2 deletions

diff --git a/activerecord/test/cases/attribute_methods/serialization_test.rb b/activerecord/test/cases/attribute_methods/serialization_test.rb
index 75de773961..2e3bcadab1 100644
--- a/activerecord/test/cases/attribute_methods/serialization_test.rb
+++ b/activerecord/test/cases/attribute_methods/serialization_test.rb
@@ -14,13 +14,13 @@ module ActiveRecord
 
       def test_type_cast_serialized_value
         value = Serialization::Attribute.new(NullCoder.new, "Hello world", :serialized)
-        type = Serialization::Type.new(FakeColumn.new)
+        type = Type::Serialized.new(FakeColumn.new)
         assert_equal "Hello world!", type.type_cast(value)
       end
 
       def test_type_cast_unserialized_value
         value = Serialization::Attribute.new(nil, "Hello world", :unserialized)
-        type = Serialization::Type.new(FakeColumn.new)
+        type = Type::Serialized.new(FakeColumn.new)
         type.type_cast(value)
         assert_equal "Hello world", type.type_cast(value)
       end