Add first java source code and gyp/ant changes to build java code.

base/android/java/base.xml

Index: base/android/java/base.xml
diff --git a/base/android/java/base.xml b/base/android/java/base.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a688eabc8d6f379cbe25077c56a4bf3017c4d587
--- /dev/null
+++ b/base/android/java/base.xml
@@ -0,0 +1,38 @@
+<project name="Base" default="dist" basedir=".">
+  <description>
+    building base java source code with ant
+  </description>
+  <!-- set global properties for this build -->
+  <property name="src" location="."/>
+  <property name="build" location="build"/>
+  <property name="dist"  location="dist"/>
+
+  <target name="init">
+    <!-- Create the time stamp -->
+    <tstamp/>
+    <!-- Create the build directory structure used by compile -->
+    <mkdir dir="${build}"/>
+  </target>
+
+  <target name="compile" depends="init"
+          description="compile the source " >
+    <!-- Compile the java code from ${src} into ${build} -->
+    <javac srcdir="${src}" destdir="${build}"/>
+  </target>
+
+  <target name="dist" depends="compile"
+          description="generate the distribution" >
+    <!-- Create the distribution directory -->
+    <mkdir dir="${dist}/lib"/>
+
+    <!-- Put everything in ${build} into the chromium_base.jar file -->
+    <jar jarfile="${dist}/lib/chromium_base.jar" basedir="${build}"/>
+  </target>
+
+  <target name="clean"
+          description="clean up" >
+    <!-- Delete the ${build} and ${dist} directory trees -->
+    <delete dir="${build}"/>
+    <delete dir="${dist}"/>
+  </target>
+</project>