AuthenticatedUser: Add license header

Change-Id: I21e7a88ab38abaed48897bf021bd5f56431e69f6

src/main/java/com/thesamet/gerrit/plugins/saml/AuthenticatedUser.java

diff --git a/src/main/java/com/thesamet/gerrit/plugins/saml/AuthenticatedUser.java b/src/main/java/com/thesamet/gerrit/plugins/saml/AuthenticatedUser.java
index 75fbff9..5836585 100644
--- a/src/main/java/com/thesamet/gerrit/plugins/saml/AuthenticatedUser.java
+++ b/src/main/java/com/thesamet/gerrit/plugins/saml/AuthenticatedUser.java
@@ -1,3 +1,17 @@
+// Copyright (C) 2015 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package com.thesamet.gerrit.plugins.saml;
 
 public class AuthenticatedUser implements java.io.Serializable {