Remove the unused helper apps on OS X.

build/mac/make_more_helpers.sh

 #!/bin/bash
 
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Usage: make_more_helpers.sh <directory_within_contents> <app_name>
 #
 # This script creates additional helper .app bundles for Chromium, based on
 # the existing helper .app bundle, changing their Mach-O header's flags to
-# enable and disable various features. Based on Chromium Helper.app, it will
-# create Chromium Helper EH.app, which has the MH_NO_HEAP_EXECUTION bit
-# cleared to support Chromium child processes that require an executable heap,
-# and Chromium Helper NP.app, which has the MH_PIE bit cleared to support
-# Chromium child processes that cannot tolerate ASLR.
+# enable and disable various features.
 #
 # This script expects to be called from the chrome_exe target as a postbuild,
 # and operates directly within the built-up browser app's versioned directory.
 #
 # Each helper is adjusted by giving it the proper bundle name, renaming the
 # executable, adjusting several Info.plist keys, and changing the executable's
 # Mach-O flags.
 
 set -eu
 
@@ skipping 53 matching lines @@
 if [[ ${#} -ne 2 ]]; then
   echo "usage: ${0} <directory_within_contents> <app_name>" >& 2
   exit 1
 fi
 
 DIRECTORY_WITHIN_CONTENTS="${1}"
 APP_NAME="${2}"
 
 CONTENTS_DIR="${BUILT_PRODUCTS_DIR}/${CONTENTS_FOLDER_PATH}"
 CONTAINING_DIR="${CONTENTS_DIR}/${DIRECTORY_WITHIN_CONTENTS}"
-
-make_helper "${CONTAINING_DIR}" "${APP_NAME}" "EH" "--executable-heap"
-make_helper "${CONTAINING_DIR}" "${APP_NAME}" "NP" "--no-pie"