Instrumented libraries: Remove dependence on GYP_DEFINES

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."""
+"""Downloads pre-built sanitizer-instrumented third-party libraries from GCS.
+This script should only be run from gn.

[Michael Achenbach, 2017/03/28 07:55:05]

Maybe differentiate: It's not run from gn, it's run from ninja. There are
scripts run from gn, but those are really called while gn executes, while this
script runs as a build target.

+"""
 
-import os
-import re
 import subprocess
 import sys
 
 
-SCRIPT_PATH = os.path.abspath(__file__)
-BASE_PATH = os.path.normpath(os.path.join(SCRIPT_PATH, *(4 * ['..'])))
+def main(args):
+  if not sys.platform.startswith('linux'):
+    raise Exception("Prebuilt instrumented libraries require Linux.")
 
-# This defaults to the consuming project's base directory, e.g. 'src' in
-# chromium.
-BASE_DIR = os.path.basename(BASE_PATH)
-
-
-def get_ubuntu_release():
-  supported_releases = ['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):
-  return "%s-%s.tgz" % (get_configuration(gyp_defines), get_ubuntu_release())
-
-
-def main(args):
-  gyp_defines = os.environ.get('GYP_DEFINES', '')
-  if not 'use_prebuilt_instrumented_libraries=1' in gyp_defines:
-    return 0
-
-  if not sys.platform.startswith('linux'):
-    raise Exception("'use_prebuilt_instrumented_libraries=1' requires Linux.")
-
-  archive_name = get_archive_name(gyp_defines)
-  sha1file = '%s.sha1' % archive_name
-  target_directory = os.path.join(
-      BASE_DIR, 'third_party', 'instrumented_libraries', 'binaries')
+  sha1file = args[0]
+  tarfile = args[1]
 
   subprocess.check_call([
       'download_from_google_storage',
       '--no_resume',
       '--no_auth',
       '--bucket', 'chromium-instrumented-libraries',
-      '-s', sha1file], cwd=target_directory)
+      '-s', sha1file, '-o', tarfile])
 
   return 0
 
 
 if __name__ == '__main__':
+  # TODO(thomasanderson): Remove this once all third_party DEPS
+  # entires for this script are removed.
+  if (len(sys.argv) == 1):
+    sys.exit(0)
   sys.exit(main(sys.argv[1:]))