Add android_x86 android_x64 to network_service download list

mojo/public/tools/download_network_service.py

 #!/usr/bin/env python
 # Copyright 2015 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.
 
 import argparse
 import os
 import sys
 import tempfile
 import zipfile
 
-_PLATFORMS = ["linux-x64", "android-arm"]
+_PLATFORMS = ["linux-x64", "android-arm", "android-x86", "android-x64"]
 _APPS = ["network_service", "network_service_apptests"]
 _CURRENT_PATH = os.path.dirname(os.path.realpath(__file__))
 sys.path.insert(0, os.path.join(_CURRENT_PATH, "pylib"))
 import gs
 
 if not sys.platform.startswith("linux"):
   print "Not supported for your platform"
   sys.exit(0)
 
 script_dir = os.path.dirname(os.path.realpath(__file__))
@@ skipping 57 matching lines @@
     version = version_file.read().strip()
 
   for app in _APPS:
     download_app(app, version, args.tools_directory)
 
   return 0
 
 
 if __name__ == "__main__":
   sys.exit(main())