Add test jar generation logic for ant builds.

build/android/ant/sdk-targets.xml

Index: build/android/ant/sdk-targets.xml
diff --git a/build/android/ant/sdk-targets.xml b/build/android/ant/sdk-targets.xml
index 8f980b418d43b9f540a2772c18cd244618b4f380..700e7d33b27f6b9383b26a6bcbd7781cdf7adf0b 100644
--- a/build/android/ant/sdk-targets.xml
+++ b/build/android/ant/sdk-targets.xml
@@ -13,7 +13,6 @@
     for aidl and javac. This file defines targets which can be used to
     override targets used by tools.
   -->
-
   <!--
     Override the -compile target.
     This target requires 'javac.custom.classpath' to be set to reference
@@ -92,6 +91,18 @@
           </emma>
         </then>
       </if>
+      <!-- if the project needs a test jar then generate a jar containing

[Yaron, 2012/09/07 19:19:31]

Nit: Start comment on next line and capitalize.

+           all compiled classes and referenced jars.
+      -->
+      <if condition="${generate.test.jar}">
+        <then>
+          <echo level="info">Creating test jar file...</echo>

[Yaron, 2012/09/07 19:19:31]

Include the property in the description so we can see which one is being
generated

+          <property-location name="create.test.jar.file"
+            location="${CHROMIUM_SRC}/build/android/ant/create-test-jar.js" />

[Yaron, 2012/09/07 19:19:31]

indent 4. Please also remove trailing spaces before the "/>" throughout your
change

+          <script language="javascript" src="${create.test.jar.file}" />
+        </then>
+      </if>
+
     </do-only-if-manifest-hasCode>
   </target>
 </project>