Converted remoting.Error from an enum to a class

remoting/webapp/unittests/xmpp_login_handler_unittest.js

Index: remoting/webapp/unittests/xmpp_login_handler_unittest.js
diff --git a/remoting/webapp/unittests/xmpp_login_handler_unittest.js b/remoting/webapp/unittests/xmpp_login_handler_unittest.js
index 14216512bdd615358e548ce21841e1e308edad93..dfd1a61a3eb18536736f6582779288d96d0c1282 100644
--- a/remoting/webapp/unittests/xmpp_login_handler_unittest.js
+++ b/remoting/webapp/unittests/xmpp_login_handler_unittest.js
@@ -162,7 +162,8 @@ test('should return AUTHENTICATION_FAILED error when failed to authenticate',
   loginHandler.onDataReceived(
       base.encodeUtf8('<failure xmlns="urn:ietf:params:xml:ns:xmpp-sasl">' +
                       '<not-authorized/></failure>'));
-  sinon.assert.calledWith(onError, remoting.Error.AUTHENTICATION_FAILED);
+  sinon.assert.calledWith(onError, new remoting.Error(
+      remoting.Error.Tag.AUTHENTICATION_FAILED));
 });
 
 test('should return UNEXPECTED error when failed to parse stream',
@@ -170,7 +171,7 @@ test('should return UNEXPECTED error when failed to parse stream',
   handshakeBase();
   loginHandler.onDataReceived(
       base.encodeUtf8('BAD DATA'));
-  sinon.assert.calledWith(onError, remoting.Error.UNEXPECTED);
+  sinon.assert.calledWith(onError, remoting.Error.unexpected());
 });
 
 })();