efs")
      .removeObserverForName(name, observer);
  },

  getCachedByDomainAndName: NYI,
  getCachedBySubdomainAndName: NYI,
  getCachedGlobal: NYI,
  extractDomain: NYI,
};

function forwardMethodToParent(method, signature, ...args) {
  // Ignore superfluous arguments
  args = args.slice(0, signature.length);

  // Process context argument for forwarding
  let contextIndex = signature.indexOf("context");
  if (contextIndex > -1) {
    args[contextIndex] = contextArg(args[contextIndex]);
  }
  // Take out the callback argument, if present.
  let callbackIndex = signature.indexOf("callback");
  let callback = null;
  if (callbackIndex > -1 && args.length > callbackIndex) {
    callback = args.splice(callbackIndex, 1)[0];
  }

  let actor = ChromeUtils.domProcessChild.getActor("ContentPrefs");
  actor.callFunction(method, args, callback);
}

for (let [method, signature] of _methodsCallableFromChild) {
  ContentPrefServiceChild[method] = forwardMethodToParent.bind(
    ContentPrefServiceChild,
    method,
    signature
  );
}
PK