The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09

commit 7397dbbc200f1fcc44f7ffc1adc18a98437e3a09
Author: Shuotao Gao <stgao@chromium.org>
Date: Wed Aug 23 22:51:16 2017

[Findit] Add permission APP_SELF for cron jobs and task queues.

1. Add a new permission APP_SELF for http endpoints that only allow requests from cron jobs and task queues.
2. Switch the permission of all http handlers for cron jobs and task queues from ADMIN/CORP_USER to APP_SELF.
3. Move task queue handlers to /waterfall/task/* and cron job handlers to /waterfall/cron/*.
4. Move cron jobs handlers to module waterfall-backend.

Bug:  757551 
Change-Id: I9669d9c22bd5e92c4f94eacf1ed6409359cba611
Reviewed-on: https://chromium-review.googlesource.com/624706
Reviewed-by: Chan Li <chanli@chromium.org>
Reviewed-by: Vadim Shtayura <vadimsh@chromium.org>
Commit-Queue: Shuotao Gao <stgao@chromium.org>

[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/dispatch.yaml
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/process_flake_analysis_request.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/test/check_reverted_cls_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/calculate_confidence_scores.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/process_flake_swarming_task_request.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/main.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/test/obscure_emails_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/common/constants.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/module-waterfall-backend.yaml
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/gae_libs/handlers/test/base_handler_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/test/process_failure_analysis_requests_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/process_failure_analysis_requests.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/cron.yaml
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/test/periodic_bot_update_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/check_reverted_cls.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/test/calculate_confidence_scores_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/obscure_emails.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/test/process_flake_swarming_task_request_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/collect_tree_closures.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/test/collect_tree_closures_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/test/process_flake_analysis_request_test.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/handlers/periodic_bot_update.py
[modify] https://crrev.com/7397dbbc200f1fcc44f7ffc1adc18a98437e3a09/appengine/findit/gae_libs/handlers/base_handler.py