tools/android/loading Switch the GCE worker to pull queues

tools/android/loading/frontend/clovis_frontend.py

 # Copyright 2016 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 flask
 from google.appengine.api import taskqueue
 import json
 import uuid
 
-from clovis_task import ClovisTask
+from frontend.clovis_task import ClovisTask
 
 
 app = flask.Flask(__name__)
 
 
 def StartFromJson(http_body_str):
   """Creates a new batch of tasks from its JSON representation"""
   task = ClovisTask.FromJson(http_body_str)
   if not task:
     return 'Invalid JSON task:\n%s\n' % http_body_str
@@ skipping 84 matching lines @@
 @app.errorhandler(404)
 def PageNotFound(e):
   """Return a custom 404 error."""
   return 'Sorry, Nothing at this URL.', 404
 
 
 @app.errorhandler(500)
 def ApplicationError(e):
   """Return a custom 500 error."""
   return 'Sorry, unexpected error: {}'.format(e), 499