Use the script helper to build of content shell on Android

content/shell/content_shell_ant_helper.sh

Index: content/shell/content_shell_ant_helper.sh
diff --git a/content/shell/content_shell_ant_helper.sh b/content/shell/content_shell_ant_helper.sh
index 167ed3b8209ff598f71a7de1e6b6af6921063ef6..9a013c71d3a6639d19aa44952a654fba91cd29ac 100755
--- a/content/shell/content_shell_ant_helper.sh
+++ b/content/shell/content_shell_ant_helper.sh
@@ -10,9 +10,9 @@ set -eu
 # ant building: 'Debug' -> 'debug'; 'Release' -> 'release'.
 # It's used by content/content_shell.gypi
 
-buildtype="$(echo "${6}" | tr '[A-Z]' '[a-z]')"
+buildtype="$(echo "${11}" | tr '[A-Z]' '[a-z]')"
 
 # TODO(yongsheng): enable build type by adding "${buildtype}" into the
 # end of parameter list once the workflow is ready to support release
 # mode.
-exec "${1}" "${2}" "${3}" "${4}" "${5}"
+exec "${1}" "${2}" "${3}" "${4}" "${5}" "${6}" "${7}" "${8}" "${9}" "${10}"