Add TSan flags to download_build_install.py

third_party/instrumented_libraries/download_build_install.py

 #!/usr/bin/python
 # Copyright 2013 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, builds (with instrumentation) and installs shared libraries."""
 
 import argparse
 import os
 import platform
@@ skipping 11 matching lines @@
 SUPPORTED_SANITIZERS = {
   'asan': {
     'compiler_flags': '-fsanitize=address -gline-tables-only -fPIC -w',
     'linker_flags': '-fsanitize=address -Wl,-z,origin -Wl,-R,XORIGIN/.'
   },
   'msan': {
     'compiler_flags': '-fsanitize=memory -fsanitize-memory-track-origins '
                       '-gline-tables-only -fPIC -w',
     'linker_flags': '-fsanitize=memory -Wl,-z,origin -Wl,-R,XORIGIN/.'
   },
+  'tsan': {
+    'compiler_flags': '-fsanitize=thread -gline-tables-only -fPIC -w',
+    'linker_flags': '-fsanitize=thread -Wl,-z,origin -Wl,-R,XORIGIN/.'
+  },
 }
 
 
 class ScopedChangeDirectory(object):
   """Changes current working directory and restores it back automatically."""
   def __init__(self, path):
     self.path = path
     self.old_path = ''
 
   def __enter__(self):
@@ skipping 226 matching lines @@
   os.chdir(get_script_absolute_path())
   # Ensure all build dependencies are installed.
   if parsed_arguments.check_build_deps:
     check_library_build_dependencies(parsed_arguments.library)
     
   download_build_install(parsed_arguments)
 
 
 if __name__ == '__main__':
   main()