contextualIdentities.remove()

cookieStoreId

string. The ID of the contextual identity's cookie store. Because contextual identities each have their own cookie store, this serves as an identifier for the contextual identity itself.

A Promise that will be fulfilled with a ContextualIdentity that describes the identity that was removed. If the identity could not be found or the contextual identities feature is not enabled, the promise is rejected.

This example tries to remove the contextual identity whose ID is "firefox-container-1":

function onRemoved(context) {
  if (!context) {
    console.error("Context not found");
  } else {
    console.log(`Removed identity: ${context.cookieStoreId}.`);
  }
}

function onError(e) {
  console.error(e);
}

browser.contextualIdentities
  .remove("firefox-container-1")
  .then(onRemoved, onError);