Support Java resources within content and chrome

build/android/ant/chromium-apk.xml

Index: build/android/ant/chromium-apk.xml
diff --git a/build/android/ant/chromium-apk.xml b/build/android/ant/chromium-apk.xml
index 6ff1ebc0381c3a0c90c4d44503fdec6e7228e94f..e17c80d055bfc5bbee02cea03aef4768f5616b52 100644
--- a/build/android/ant/chromium-apk.xml
+++ b/build/android/ant/chromium-apk.xml
@@ -31,6 +31,19 @@
     <filelist files="${GENERATED_SRC_DIRS}"/>
   </path>
 
+  <!-- Include additional resource folders in the apk, e.g. content/.../res.
+       We list the res folders in project.library.res.folder.path and the
+       corresponding java packages in project.library.packages, which must be
+       semicolon-delimited while ADDITION_RES_PACKAGES is space-delimited, hence
+       the javascript task. -->
+  <path id="project.library.res.folder.path">
+    <filelist files="${ADDITIONAL_RES_DIRS}"/>
+  </path>
+  <script language="javascript">
+      var before = project.getProperty("ADDITIONAL_RES_PACKAGES");
+      project.setProperty("project.library.packages", before.replaceAll(" ", ";"));
+  </script>
+
   <property-value name="target.abi" value="${APP_ABI}"/>
   <property name="resource.absolute.dir" value="${RESOURCE_DIR}"/>
   <property-value name="gen.absolute.dir" value="${out.dir}/gen"/>