Reland of PyLint fixes for tools-webrtc and webrtc/tools

cleanup_links.py

 #!/usr/bin/env python
 # Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 """Script to cleanup symlinks created from setup_links.py.
@@ skipping 35 matching lines @@
         if not self._dry_run:
           if os.path.exists(link_path):
             if sys.platform.startswith('win') and os.path.isdir(link_path):
               subprocess.check_call(['rmdir', '/q', '/s', link_path],
                                     shell=True)
             else:
               os.remove(link_path)
           del self._links_db[source]
 
 
-def _initialize_database(filename):
+def _InitializeDatabase(filename):
   links_database = shelve.open(filename)
   # Wipe the database if this version of the script ends up looking at a
   # newer (future) version of the links db, just to be sure.
   version = links_database.get('SCHEMA_VERSION')
   if version and version != SCHEMA_VERSION:
     logging.info('Found database with schema version %s while this script only '
                  'supports %s. Wiping previous database contents.', version,
                  SCHEMA_VERSION)
     links_database.clear()
   links_database['SCHEMA_VERSION'] = SCHEMA_VERSION
@@ skipping 15 matching lines @@
     options.verbose = logging.DEBUG
   logging.basicConfig(format='%(message)s', level=options.verbose)
 
   # Work from the root directory of the checkout.
   script_dir = os.path.dirname(os.path.abspath(__file__))
   os.chdir(script_dir)
 
   # The database file gets .db appended on some platforms.
   db_filenames = [LINKS_DB, LINKS_DB + '.db']
   if any(os.path.isfile(f) for f in db_filenames):
-    links_database = _initialize_database(LINKS_DB)
+    links_database = _InitializeDatabase(LINKS_DB)
     try:
       symlink_creator = WebRTCLinkSetup(links_database, options.dry_run)
       symlink_creator.CleanupLinks()
     finally:
       for f in db_filenames:
         if os.path.isfile(f):
           os.remove(f)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())