Tornado web.py diff

gistfile1.txt

175c175
<     def clear(self):
---
>     def clear(self, extra_headers=None):
180a181,182
>         if extra_headers:
>             self._headers.update(extra_headers)
578c580
<     def send_error(self, status_code=500, **kwargs):
---
>     def send_error(self, status_code=500, extra_headers=None, **kwargs):
590c592
<         self.clear()
---
>         self.clear(extra_headers)