Pass lsan GYP variable to swarming's test_env so that we can disable the sandbox when it's set.

ppapi/native_client/tools/browser_tester/browser_tester.py

 #!/usr/bin/python
 # 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.
 
 import glob
 import optparse
 import os.path
 import socket
 import sys
@@ skipping 193 matching lines @@
   # Tests, such as run_inbrowser_trusted_crash_in_startup_test, may not use the
   # RunFromCommand line entry point - and otherwise get stuck in an infinite
   # loop when something goes wrong and the hard timeout is not set.
   # http://code.google.com/p/chromium/issues/detail?id=105406
   if options.hard_timeout is None:
     options.hard_timeout = options.timeout * 4
 
   options.files.append(os.path.join(script_dir, 'browserdata', 'nacltest.js'))
 
   # Setup the environment with the setuid sandbox path.
-  test_env.enable_sandbox_if_required(os.environ)
+  test_env.enable_sandbox_if_required(sys.argv, os.environ)
 
   # Create server
   host = GetHostName()
   try:
     server = browsertester.server.Create(host, options.port)
   except Exception:
     sys.stdout.write('Could not bind %r, falling back to localhost.\n' % host)
     server = browsertester.server.Create('localhost', options.port)
 
   # If port 0 has been requested, an arbitrary port will be bound so we need to
@@ skipping 170 matching lines @@
   # Validate the URL
   url = options.url
   if url is None:
     parser.error('Must specify a URL')
 
   return Run(url, options)
 
 
 if __name__ == '__main__':
   sys.exit(RunFromCommandLine())