The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra.git/+/ba0044d3eac27f216508c461ca615436f3892b2f

commit ba0044d3eac27f216508c461ca615436f3892b2f
Author: Erik Staab <estaab@google.com>
Date: Thu Dec 01 14:01:21 2016

test-results: Remove dependency on buildbot / milo.

This changes the way we generate the list of known (master, builder, test)
tuples to use what has recently been uploaded instead of scraping step names
from recent passing buildbot builds.

The benefits to doing this are:
1) No more outages from empty builder data caused by milo queries that
timeout from being too large.
2) The javascript client will now only fetch results for combinations that
exist instead of an approximate set.
3) New test combinations will be able to upload and serve without
needing to be whitelisted.

BUG= 666889 ,659952, 655967 , 666810 , 661047 , 643944 , 405799 

Change-Id: Icd0a8a88eecbd920677f704cf816b143e7437e50
Reviewed-on: https://chromium-review.googlesource.com/413142
Commit-Queue: Erik Staab <estaab@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>

[modify] https://crrev.com/ba0044d3eac27f216508c461ca615436f3892b2f/appengine/test_results/index.yaml
[delete] https://crrev.com/fb6cd3035cc307a93948a87be99320e24ece75c0/go/src/infra/appengine/test-results/buildextract/buildextract.go
[delete] https://crrev.com/fb6cd3035cc307a93948a87be99320e24ece75c0/go/src/infra/appengine/test-results/buildextract/buildextract.infra_testing
[delete] https://crrev.com/fb6cd3035cc307a93948a87be99320e24ece75c0/go/src/infra/appengine/test-results/buildextract/buildextract_test.go
[delete] https://crrev.com/fb6cd3035cc307a93948a87be99320e24ece75c0/go/src/infra/appengine/test-results/buildextract/testing.go
[delete] https://crrev.com/fb6cd3035cc307a93948a87be99320e24ece75c0/go/src/infra/appengine/test-results/buildextract/testing_test.go
[modify] https://crrev.com/ba0044d3eac27f216508c461ca615436f3892b2f/go/src/infra/appengine/test-results/cron.yaml
[modify] https://crrev.com/ba0044d3eac27f216508c461ca615436f3892b2f/go/src/infra/appengine/test-results/frontend/builders.go
[modify] https://crrev.com/ba0044d3eac27f216508c461ca615436f3892b2f/go/src/infra/appengine/test-results/frontend/builders_test.go
[modify] https://crrev.com/ba0044d3eac27f216508c461ca615436f3892b2f/go/src/infra/appengine/test-results/frontend/handlers.go

This doesn't query any backends now.