Instrumented libraries: add pre-built libs for msan-no-origins.

third_party/instrumented_libraries/scripts/download_binaries.py

 #!/usr/bin/env python
 # Copyright (c) 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.
 
 """Downloads pre-built sanitizer-instrumented third-party libraries from GCS."""
 
 import os
 import re
 import subprocess
 import sys
 
 def get_ubuntu_release():
   supported_releases = ['precise', 'trusty']
   release = subprocess.check_output(['lsb_release', '-cs']).strip()
   if release not in supported_releases:
     raise Exception("Supported Ubuntu versions: %s", str(supported_releases))
   return release
 
 
 def get_configuration(gyp_defines):
   if re.search(r'\b(msan)=1', gyp_defines):
+    if 'msan_track_origins=0' in gyp_defines:
+      return 'msan-no-origins'
     if 'msan_track_origins=2' in gyp_defines:
       return 'msan-chained-origins'
     if 'msan_track_origins=' not in gyp_defines:
       # NB: must be the same as the default value in common.gypi
       return 'msan-chained-origins'
   raise Exception(
       "Prebuilt instrumented libraries not available for your configuration.")
 
 
 def get_archive_name(gyp_defines):
@@ skipping 17 matching lines @@
       '--no_resume',
       '--no_auth',
       '--bucket', 'chromium-instrumented-libraries',
       '-s', sha1file], cwd=target_directory)
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))