chromium-cpp: Set status code on errors, so that the console can track them.

styleguide/c++/chromium-cpp/main.py

 #!/usr/bin/env python
 #
 # Copyright 2014 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.
 from google.appengine.api import memcache
 from google.appengine.api import urlfetch
 import webapp2
 
 import base64
@@ skipping 15 matching lines @@
     def get(self, resource):
         if '..' in resource:  # No path traversal.
             self.response.write(':-(')
             return
 
         url = BASE % resource
         contents = memcache.get(url)
         if not contents or self.request.get('bust'):
             result = urlfetch.fetch(url)
             if result.status_code != 200:
+                self.response.set_status(result.status_code)
                 self.response.write('http error %d' % result.status_code)
                 return
             contents = base64.b64decode(result.content)
             memcache.set(url, contents, time=5*60)  # seconds
 
         if resource.endswith('.css'):
           self.response.headers['Content-Type'] = 'text/css'
         self.response.write(contents)
 
 
 app = webapp2.WSGIApplication([
     ('/', MainHandler),
     ('/(\S+\.(?:css|html))', GitilesMirrorHandler),
 ], debug=True)