Update monet.

tools/download_from_google_storage.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.
+
+# depot_tools' download_from_google_storage.py expects to be run from the parent
+# of the 'src' directory so that paths like 'src/buildtools/linux64/gn.sha1'
+# resolve. This script exists at src/tools/ and sets the working directory for
+# download_from_google_storage.py so that it can be run from anywhere.
+
+import os
+import sys
+import subprocess
+
+def main(args):
+  dir = os.path.abspath(os.path.join(os.path.dirname(__file__),
+                        os.pardir, os.pardir))
+  subprocess.check_call(['download_from_google_storage.py'] + args, cwd=dir)
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))