function prefSetter(prefName, defaultValue) {
  if (possibly_missing_preferences.has(prefName) && !this[prefName]) {
    return;
  }
  this[prefName].set({value: !defaultValue},
                     chrome.test.callbackPass(function() {
    this[prefName].get({}, expectControlled(prefName, !defaultValue));
  }.bind(this)));
}
// it should be controlled by this extension).
it should be controlled by this extension).
it should be controlled by this extension ) .
function prefSetter(prefName, defaultValue) {
  if (possibly_missing_preferences.has(prefName) && !this[prefName]) {
    return;
  }
  this[prefName].set({value: !defaultValue},
                     chrome.test.callbackPass(function() {
    this[prefName].get({}, expectControlled(prefName, !defaultValue));
  }.bind(this)));
}
function prefSetter ( prefName , defaultValue ) { if ( possibly_missing_preferences . has ( prefName ) && ! this [ prefName ] ) { return ; } this [ prefName ] . set ( { value : ! defaultValue } , chrome . test . callbackPass ( function ( ) { this [ prefName ] . get ( { } , expectControlled ( prefName , ! defaultValue ) ) ; } . bind ( this ) ) ) ; }
it should be controlled by this extension).
it should be controlled by this extension ) .