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diff --git a/mobile/android/thirdparty/ch/boye/httpclientandroidlib/annotation/Immutable.java b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/annotation/Immutable.java
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+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+package ch.boye.httpclientandroidlib.annotation;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * The class to which this annotation is applied is immutable.  This means that
+ * its state cannot be seen to change by callers, which implies that
+ * <ul>
+ * <li> all public fields are final, </li>
+ * <li> all public final reference fields refer to other immutable objects, and </li>
+ * <li> constructors and methods do not publish references to any internal state
+ *      which is potentially mutable by the implementation. </li>
+ * </ul>
+ * Immutable objects may still have internal mutable state for purposes of performance
+ * optimization; some state variables may be lazily computed, so long as they are computed
+ * from immutable state and that callers cannot tell the difference.
+ * <p>
+ * Immutable objects are inherently thread-safe; they may be passed between threads or
+ * published without synchronization.
+ * <p>
+ * Based on code developed by Brian Goetz and Tim Peierls and concepts
+ * published in 'Java Concurrency in Practice' by Brian Goetz, Tim Peierls,
+ * Joshua Bloch, Joseph Bowbeer, David Holmes and Doug Lea.
+ */
+@Documented
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.CLASS) // The original version used RUNTIME
+public @interface Immutable {
+}