How to remove/disable the automatic XSS protection helper html escaping for Rails 3

gistfile1.rb

# dirty way to completely remove the automatic escaping of html in rails helpers
# useful to get your Rails 2 -> 3 upgrade running to the point where the raw/.html_safe additions can be delegated

module CustomHtmlSafe
  def html_safe?
    true
  end
end

class ActionView::OutputBuffer
  include CustomHtmlSafe
end
class ActionView::SafeBuffer
  include CustomHtmlSafe
end
class String
  include CustomHtmlSafe
end

Do you put this in a initializer?