I'm suspecting the blacklist doesn't work because we are checking full step_name instead of canonical step_name. I need to look into the code but right now it seems easy to fix.

I think the new parser for json_test_results_format should be fully ready in 2~3 weeks. 

Does it worth to make the blacklist a regex instead of a full string equal?

My plan was to use canonical step name instead of full step name when check if a step is supported or not.

SG. That would work, and is better.

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/8dc625f6725b4d398219315c3dca34a359d39d53

commit 8dc625f6725b4d398219315c3dca34a359d39d53
Author: Chan <chanli@chromium.org>
Date: Tue Feb 20 19:00:41 2018

[Findit] Use canonical step_name to decide if Findit supports a step or not.

This change will make Findit to check a step's canonical name to decide if the step is supported or not.

The supported value will also be saved in failure info so that Findit doesn't need to check with config repeatedly in different steps of analysis.

Bug:  812122 
Change-Id: I347b370491973f2333dcfd61f6e2a116ad88067e
Reviewed-on: https://chromium-review.googlesource.com/920386
Commit-Queue: Chan Li <chanli@chromium.org>
Reviewed-by: Shuotao Gao <stgao@chromium.org>

[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/compile_failure/test/compile_try_job_test.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/compile_failure/compile_failure_analysis.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/ci_failure.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/build_failure_analysis.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/compile_failure/compile_try_job.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/parameters.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/compile_failure/test/extract_compile_signal_test.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/test_failure/test_failure_analysis.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/test_failure/extract_test_signal.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/test/build_failure_analysis_test.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/compile_failure/test/compile_failure_analysis_test.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/test/ci_failure_test.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/compile_failure/extract_compile_signal.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/waterfall/build_util.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/test_failure/test/ci_test_failure_test.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/test_failure/test/test_failure_analysis_test.py
[modify] https://crrev.com/8dc625f6725b4d398219315c3dca34a359d39d53/appengine/findit/services/test_failure/test/extract_test_signal_test.py