Make ContentShell create a jar containing its .class output

content/shell/android/java/content_shell_apk.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
   Copyright (c) 2012 The Chromium Authors. All rights reserved.
   Use of this source code is governed by a BSD-style license that can be
   found in the LICENSE file.
 -->
 <project name="ContentShell" default="debug" basedir=".">
   <description>
     Building ContentShell.apk
   </description>
@@ skipping 38 matching lines @@
       <condition>
         <equals arg1="${build.target}" arg2="debug"/>
       </condition>
       <then>
         <echo message="Copying gdbserver to the apk to enable native debugging"/>
         <copy todir="${out.dir}/libs/${target.abi}">
           <path refid="native.libs.gdbserver"/>
         </copy>
       </then>
     </if>
+
+    <!-- Package all the compiled .class files into a .jar. -->
+    <jar
+      jarfile="${lib.java.dir}/chromium_${PACKAGE_NAME}.jar"
+      basedir="${out.classes.absolute.dir}"
+    />
   </target>
 
   <!-- Classpath for javac -->
   <path id="javac.custom.classpath">
     <path refid="out.dex.jar.input.ref"/>
   </path>
 
   <import file="../../../../build/android/ant/sdk-targets.xml"/>
   <import file="${sdk.dir}/tools/ant/build.xml"/>
 </project>