patch private policy

Author: shiatsumat

externs/firebaseui-externs.js

@@ -256,6 +256,13 @@ firebaseui.auth.Config.prototype.siteName;
  */
 firebaseui.auth.Config.prototype.tosUrl;
 
+/**
+ * The privacy policy URL.
+ *
+ * @type {string|undefined}
+ */
+firebaseui.auth.Config.prototype.privacyPolicyUrl;
+
 /**
  * The sign-in widget URL. If not provided, this is the current URL.
  *

types/index.d.ts

@@ -70,6 +70,7 @@ declare namespace firebaseui.auth {
     signInSuccessUrl?: string;
     siteName?: string;
     tosUrl?: string;
+    privacyPolicyUrl?: string;
     widgetUrl?: string;
   }