pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/client/cache/HttpCacheUpdateException.java

@@ -0,0 +1,48 @@
+/*
+ * ====================================================================
+ * 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.client.cache;
+
+/**
+ * Signals that {@link HttpCacheStorage} encountered an error performing an
+ * update operation.
+ *
+ * @since 4.1
+ */
+public class HttpCacheUpdateException extends Exception {
+
+    private static final long serialVersionUID = 823573584868632876L;
+
+    public HttpCacheUpdateException(final String message) {
+        super(message);
+    }
+
+    public HttpCacheUpdateException(final String message, final Throwable cause) {
+        super(message);
+        initCause(cause);
+    }
+
+}