Revert auth changes from bad merge

Author: hsubox76

packages/auth-interop-types/README.md

@@ -618,10 +618,27 @@ fireauth.exportlib.exportFunction(
 
 (function() {
   if (typeof firebase === 'undefined' || !firebase.INTERNAL ||
-      !firebase.INTERNAL.registerComponent) {
+      !firebase.INTERNAL.registerService) {
     throw new Error('Cannot find the firebase namespace; be sure to include ' +
         'firebase-app.js before this library.');
   } else {
+    /** @type {!firebase.ServiceFactory} */
+    var factory = function(app, extendApp) {
+      var auth = new fireauth.Auth(app);
+      extendApp({
+        'INTERNAL': {
+          // Extend app.INTERNAL.getUid.
+          'getUid': goog.bind(auth.getUid, auth),
+          'getToken': goog.bind(auth.getIdTokenInternal, auth),
+          'addAuthTokenListener':
+              goog.bind(auth.addAuthTokenListenerInternal, auth),
+          'removeAuthTokenListener':
+              goog.bind(auth.removeAuthTokenListenerInternal, auth)
+        }
+      });
+      return auth;
+    };
+
     var namespace = {
       // Exports firebase.auth.ActionCodeInfo.Operation.
       'ActionCodeInfo': {
@@ -711,4 +728,4 @@ fireauth.exportlib.exportFunction(
       'User': fireauth.AuthUser
     });
   }
-})();
+})();