The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/b829553125a6e0f867ec5f997c674e7cfb79cf10

commit b829553125a6e0f867ec5f997c674e7cfb79cf10
Author: Jeffrey Li <lijeffrey@chromium.org>
Date: Thu Apr 05 07:13:58 2018

[Findit] Flake Analyzer - Asynchronous RunFlakeSwarmingTaskPipeline

1. Change RunFlakeSwarmingTaskPipeline from Generator to Asynchronous
2. Get rid of calls to old pipelines and replace with asynchronous
3. Introduce flake_swarming.py which handles all swarming task requests
   and operations

Bug:  828624 ,  819284 
Change-Id: Ia0f9422e85f47b9865b59af1f023d737be2bf447
Reviewed-on: https://chromium-review.googlesource.com/994238
Reviewed-by: Chan Li <chanli@chromium.org>
Commit-Queue: Jeffrey Li <lijeffrey@chromium.org>

[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/dto/flake_swarming_task_output.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/dto/test/flake_swarming_task_output_test.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/pipelines/flake_failure/test/update_flake_analysis_data_points_pipeline_test.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/pipelines/flake_failure/run_flake_swarming_task_pipeline.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/services/flake_failure/test/flake_analysis_util_test.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/services/flake_failure/data_point_util.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/services/flake_failure/test/pass_rate_util_test.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/services/flake_failure/test/data_point_util_test.py
[add] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/services/flake_failure/test/flake_swarming_test.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/pipelines/flake_failure/test/determine_approximate_pass_rate_pipeline_test.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/pipelines/flake_failure/test/run_flake_swarming_task_pipeline_test.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/services/test_results.py
[modify] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/services/flake_failure/flake_analysis_util.py
[add] https://crrev.com/b829553125a6e0f867ec5f997c674e7cfb79cf10/appengine/findit/services/flake_failure/flake_swarming.py