Fix error introduced in extract_actions.py.

tools/metrics/actions/extract_actions.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.
 
 """Extract UserMetrics "actions" strings from the Chrome source.
 
 This program generates the list of known actions we expect to see in the
 user behavior logs.  It walks the Chrome source, looking for calls to
@@ skipping 465 matching lines @@
   number_of_files_total = number_of_files_total + 1
 
   finder = ActionNameFinder(path, open(path).read())
   while True:
     try:
       action_name = finder.FindNextAction()
       if not action_name:
         break
       actions.add(action_name)
     except InvalidStatementException, e:
-      log.warning(str(e))
+      logging.warning(str(e))
 
   line_number = 0
   for line in open(path):
     line_number = line_number + 1
     if COMPUTED_ACTION_RE.search(line):
       # Warn if this file shouldn't be calling RecordComputedAction.
       if os.path.basename(path) not in KNOWN_COMPUTED_USERS:
-        log.warning('%s has RecordComputedAction statement on line %d' %
-                    (path, line_number))
+        logging.warning('%s has RecordComputedAction statement on line %d' %
+                        (path, line_number))
 
 class WebUIActionsParser(HTMLParser):
   """Parses an HTML file, looking for all tags with a 'metric' attribute.
   Adds user actions corresponding to any metrics found.
 
   Arguments:
     actions: set of actions to add to
   """
   def __init__(self, actions):
     HTMLParser.__init__(self)
@@ skipping 362 matching lines @@
 
   with open(actions_xml_path, 'wb') as f:
     f.write(pretty)
   print ('Updated %s. Don\'t forget to add it to your changelist' %
          actions_xml_path)
   return 0
 
 
 if '__main__' == __name__:
   sys.exit(main(sys.argv))