Right you would have to change those lines to:

    noThanks.click(GOVUK.userSatisfaction.setCookieTakenSurvey);
    takeSurvey.click(GOVUK.userSatisfaction.setCookieTakenSurvey);
    takeSurvey.click(GOVUK.userSatisfaction.appendCurrentPathToSurveyUrl);

What I tend to do on whitehall is use a self executing function to create the object literal so we have a shorter name to use for internal function calls. You can see an example [here][1], but the general style is:

    (function(){
      var short = {
        method: function(){},
        otherMethod: function(){
          $('a').click(short.method);
        }
      };
      window.GOVUK.somethingLongerAndMoreDescriptive = short;
    }())

Which makes the internal function calls slightly easier to read.

[1]: https://github.com/alphagov/whitehall/blob/1d642921fafa2ed85c1f2c061871577c2ea60c82/app/assets/javascripts/application/joining-message.js