apk-based test runner work for android

base/android/java/base.xml

 <project name="Base" default="dist" basedir=".">
   <description>
     building base java source code with ant
   </description>
   <!-- Set global properties for this build -->
   <property environment="env"/>
   <property name="sdk.dir" location="${env.ANDROID_SDK_ROOT}"/>
   <property name="sdk.version" value="${env.ANDROID_SDK_VERSION}"/>
   <property name="src" location="."/>
-  <property name="build" location="build"/>
   <property name="dist" location="dist"/>
+  <property name="out.dir" location="${PRODUCT_DIR}"/>
+  <!-- TODO(jrg): establish a standard for the intermediate java
+       directories.  Settle on a standard once ant/jar build files
+       like this are androidified -->
+  <property name="dest.dir" location="${PRODUCT_DIR}/java/base"/>
 
   <target name="init">
     <!-- Create the time stamp -->
     <tstamp/>
     <!-- Create the build directory structure used by compile -->
-    <mkdir dir="${build}"/>
+    <mkdir dir="${out.dir}"/>
+    <mkdir dir="${dest.dir}"/>
   </target>
 
   <target name="compile" depends="init"
           description="compile the source " >
     <!-- Compile the java code from ${src} into ${build} -->
-    <javac srcdir="${src}" destdir="${build}">
+    <!-- TODO(jrg): adapting this to a proper android antfile will
+         remove warnings like this:
+           base.xml:23: warning: 'includeantruntime' was not set, 
+           defaulting to build.sysclasspath=last; 
+           set to false for repeatable builds
+      -->
+    <javac srcdir="${src}" destdir="${dest.dir}">
       <classpath>
         <path location="${sdk.dir}/platforms/android-${sdk.version}/android.jar"/>
       </classpath>
     </javac>
   </target>
 
   <target name="dist" depends="compile"
           description="generate the distribution" >
     <!-- Create the distribution directory -->
     <mkdir dir="${dist}/lib"/>
 
-    <!-- Put everything in ${build} into the chromium_base.jar file -->
-    <jar jarfile="${dist}/lib/chromium_base.jar" basedir="${build}"/>
+    <jar jarfile="${out.dir}/chromium_base.jar" basedir="${dest.dir}"/>
   </target>
 
   <target name="clean"
           description="clean up" >
-    <!-- Delete the ${build} and ${dist} directory trees -->
-    <delete dir="${build}"/>
+    <!-- Delete the appropriate directory trees -->
+    <delete dir="${dest.dir}"/>
     <delete dir="${dist}"/>
   </target>
 </project>