Make docstrings more consistent using format-webkitpy.

third_party/WebKit/Tools/Scripts/webkitpy/common/system/stack_utils.py

 # Copyright (C) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 26 matching lines @@
     stack = _find_thread_stack(thread_id)
     assert stack is not None
     logger("")
     logger("%s (tid %d) %s" % (name, thread_id, msg))
     _log_stack(logger, stack)
     logger("")
 
 
 def _find_thread_stack(thread_id):
     """Returns a stack object that can be used to dump a stack trace for
-    the given thread id (or None if the id is not found)."""
+    the given thread id (or None if the id is not found).
+    """
     for tid, stack in sys._current_frames().items():
         if tid == thread_id:
             return stack
     return None
 
 
 def _log_stack(logger, stack):
     """Log a stack trace to the logger callback."""
     for filename, lineno, name, line in traceback.extract_stack(stack):
         logger('File: "%s", line %d, in %s' % (filename, lineno, name))
         if line:
             logger('  %s' % line.strip())
 
 
 def log_traceback(logger, tb):
     stack = traceback.extract_tb(tb)
     for frame_str in traceback.format_list(stack):
         for line in frame_str.split('\n'):
             if line:
                 logger("  %s" % line)