Fix error when checking the request arguments.

profiling.py

 # Copyright (c) 2011 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.
 
 """Profile reporting service."""
 
 import datetime
 import logging
 
 import simplejson as json
@@ skipping 66 matching lines @@
     self.response.out.write(json.dumps(data, separators=(',',':')))
 
   def post(self):
     """Adds a new profile report.
 
     Anyone can add a report.
     """
     blacklist = ('timestamp', 'executable', 'first_arg')
     required = ('argv', 'duration', 'platform', 'domain')
     accepted_keys = list(set(ProfileReport.properties()) - set(blacklist))
+    arguments = self.request.arguments()
     kwargs = dict(
-        (k, self.request.get(k)) for k in accepted_keys if k in self.request)
+        (k, self.request.get(k)) for k in accepted_keys if k in arguments)
 
     if not all(kwargs.get(k, None) for k in required):
       logging.info('missing required keys. %r' % kwargs)
       self.response.out.write('fail')
       return
 
     try:
       kwargs['duration'] = float(kwargs['duration'])
     except ValueError:
       logging.info('duration(%s) is invalid' % kwargs['duration'])
@@ skipping 11 matching lines @@
   """A cron job."""
   @utils.work_queue_only
   def get(self):
     """Delete reports older than ~6 months."""
     cutoff = datetime.datetime.now() - datetime.timedelta(days=31*6)
     # Will only delete 1000 reports at a time max. Shouldn't be a problem unless
     # we get more than 1000 reports/day.
     for report in db.Query(ProfileReport, keys_only=True).filter(
         'date <', cutoff):
       db.delete(report)