Make ActiveSupport::Benchmarkable a default module for ActionController::Base,...

Make ActiveSupport::Benchmarkable a default module for ActionController::Base, so the #benchmark method is once again available in the controller context like it used to be *DHH*

actionpack/CHANGELOG.md

 ## Rails 3.2.0 (unreleased) ##
 
+*   Make ActiveSupport::Benchmarkable a default module for ActionController::Base, so the #benchmark method is once again available in the controller context like it used to be *DHH*
+
 *   Deprecated implied layout lookup in controllers whose parent had a explicit layout set:
 
         class ApplicationController

actionpack/lib/action_controller/base.rb

@@ -208,6 +208,8 @@ def self.without_modules(*modules)
       HttpAuthentication::Digest::ControllerMethods,
       HttpAuthentication::Token::ControllerMethods,
 
+      ActiveSupport::Benchmarkable,
+
       # Before callbacks should also be executed the earliest as possible, so
       # also include them at the bottom.
       AbstractController::Callbacks,