Fix for handling pages without a timestamp.

handler.py

 # 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.
 
 import urllib
 
 from google.appengine.ext import deferred
 # F0401:  9,0: Unable to import 'webapp2'
 # pylint: disable=F0401
 import webapp2
@@ skipping 64 matching lines @@
       num_revs = utils.clean_int(num_revs, -1)
       if num_revs <= 0:
         num_revs = None
     app.console_merger(unquoted_localpath, 'console/chromium', page_data,
                        num_rows_to_merge=num_revs)
     return app.get_and_cache_pagedata(unquoted_localpath)
 
 
 def recent_page(page_data):
   ts = page_data.get('fetch_timestamp')
+  if not ts:
+    return False
   now = app.datetime.datetime.now()
   if isinstance(ts, app.datetime.datetime):
     delta = now - ts
   else:
     delta = now - app.datetime.datetime.strptime(ts, "%Y-%m-%dT%H:%M:%S.%f")
   return delta < app.datetime.timedelta(minutes=1)
 
 
 class FetchPagesAction(base_page.BasePage):
 
@@ skipping 14 matching lines @@
 app.bootstrap()
 base_page.bootstrap()
 
 # GAE will cache |application| across requests if we set it here.  See
 # http://code.google.com/appengine/docs/python/runtime.html#App_Caching for more
 # info.
 application = webapp2.WSGIApplication(
   [('/', MainAction),
    ('/p/(.*)', PageAction),
    ('/tasks/fetch_pages', FetchPagesAction)])