Update from https://crrev.com/318214

testing/test_env.py

 #!/usr/bin/env 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.
 
 """Sets environment variables needed to run a chromium unit test."""
 
 import os
 import stat
 import subprocess
@@ skipping 90 matching lines @@
   if lsan:
     if asan or msan:
       lsan_options = []
     else:
       lsan_options = symbolization_options[:]
     if sys.platform == 'linux2':
       # Use the debug version of libstdc++ under LSan. If we don't, there will
       # be a lot of incomplete stack traces in the reports.
       extra_env['LD_LIBRARY_PATH'] = '/usr/lib/x86_64-linux-gnu/debug:'
 
-    suppressions_file = os.path.join(ROOT_DIR, 'tools', 'lsan',
-        'suppressions.txt')
-    lsan_options += ['suppressions=%s' % suppressions_file,
-                     'print_suppressions=1']
     extra_env['LSAN_OPTIONS'] = ' '.join(lsan_options)
 
   if msan:
     msan_options = symbolization_options[:]
     if lsan:
       msan_options.append('detect_leaks=1')
     extra_env['MSAN_OPTIONS'] = ' '.join(msan_options)
 
   if tsan:
     tsan_options = symbolization_options[:]
@@ skipping 109 matching lines @@
     print >> sys.stderr, 'Failed to start %s' % cmd
     raise
 
 
 def main():
   return run_executable(sys.argv[1:], os.environ.copy())
 
 
 if __name__ == '__main__':
   sys.exit(main())